A message on MacOS Forge tersely states,

The ZFS project has been discontinued. The mailing list and repository will also be removed shortly.

There have been multiple explanations as to why Apple dropped ZFS support in Snow Leopard, and now there's more speculation to add into the mix. This time the story goes that when Oracle bought Sun, Oracle didn't want continue development on ZFS because they already had their own filesystem (BTRFS) in the oven.

ZFS was also apparently facing patent suits at the time. It all sounds like a complicated legal and political mess, which is probably why Apple just dropped it.

Whatever the true causes behind ZFS' sudden fall from grace may be, it's disappointing that we'll have to wait longer for a true filesystem upgrade in OS X. [AppleInsider]

Robin Harris, who has worked in the data storage field for as long as I've been alive, is discussing the mysterious absence of ZFS in Mac OS 10.6 over at his blog StorageMojo. He reconsiders his original stance, that there were migration or integration timeline issues, in favor of it being a battle between licensing preferences.

Harris speculates that Sun Microsystems, the folks behind ZFS, may have pushed for a Common Development and Distribution License (CDDL) and patent indemnification which turned Apple off the deal. Harris emphasizes that the incompatibility between CDDL and GPL was one of the issues for Apple, but certainly not the only one. (How could it be when there are CDDL elements such as DTrace in Snow Leopard already?)

Patent indemnification could play a larger role as the manner in which Sun might waive patent claims against Apple for the use of ZFS wouldn't actually truly protect Apple from third-party claims, but that too is speculation.

What we do know is that Apple promised us ZFS a year ago and didn't put out this month. Be it a lovers' spat with Sun, licensing issues, or a larger legal picture, we're still optimistic that we'll see ZFS down the road, particularly with the changes going on as part of Sun being taken over by Oracle.

Check out Harris' thoughts and tell us yours. Why did Apple go back on something they were so proud to announce? And when will this broken promise be made up to us? [Storage mojo]

As John mentioned yesterday, it's an update that resembles Windows 7's amazing Taskbar, in that you can get at more windows and files from the Dock itself, currently considered more of an app launcher than an app manager. Here are the new key attributes for Exposé, and how it works within the Dock:

• Exposé itself has a new look: Windows are arranged in a grid rather than in whatever open space is available, and the title of each window appears underneath. (You can see this in the video below, if you pay attention.)

• Stacks, those folder contents that pop up from the Dock, also got tweaked. Most notably, you can scroll to see all the stuff in a stack without clicking the "More" arrow, and folders that appear in stacks can be opened and browsed, too.

• If you click and hold an app icon in the Dock, all the windows open in that app will reveal themselves in the Exposé grid, lined up neatly. Using some key command or cursor gesture (which I don't know), you can even zoom in to one of the open windows, and check it out without leaving Exposé.

• If you grab a file, you can drag it to the dock and hold it over an app icon. This springs open App, and arranges the open windows of that app in Exposé, so you can easily drop the file where it needs to go. (I currently do this by holding the file with my mouse while doing a combo-keystroke to bring the window back into view, so I can see how this will make life easier.)

The image associated with this post is best viewed using a browser.

[Apple's Snow Leopard "Refinements"; Snow Leopard Full Coverage on Gizmodo]

We know that Snow Leopard isn't going to be any kind of massive overhaul, but more of a refinement of the existing OS. It's aiming for stability, speed, and power management.

All the other screenshots that Sevenmac have just look to be proving that they actually have a working version of Snow Leopard. This one, though, is definitely weird. You have to restart the preference app in 32-bit mode in order to access the Network preference pane? Is it because this developer version only has the 32-bit version of the Network PP done? Is that going to be a recurring issue, that 64-bit apps that have to somehow work with 32-bit code needs to start/restart in compatibility mode? It would be super annoying if the OS doesn't handle it transparently, so this has us scratching our heads.

It is, though, probably a side-effect of Snow Leopard's tighter 64-bit compatibility. For more on that, and why 64-bit is going to make 10.6 cool, head over here to Giz Explains.

Sevenmac has a bunch of other pictures over here. [Sevenmac]

AppleInsider chalks the size decreases up to wider use of vector graphics and a centralized localization scheme, so as to prevent redundant language installations. More likely, however, is that the exclusion of PowerPC support has allowed for some serious pruning, allowing Apple to shed years of IBM residue from each app.

Additional reports confirm, as previously reported, that ZFS will be include in Snow Leopard Server, and claim that new text processing features (like autocorrect and text insertion) will be implemented system-wide, and that a multitouch programming tools will be supplied to developers for inclusion into their 3rd party apps. It looks like Apple is committing to the strategy of optimizing and improving upon an existing product instead of pushing for conspicuous new features, which is bold, to say the least

UPDATE: Macrumors has an interesting post that could explain the reduced sizes. Apparently if you remove extra languages as well as .nib bundles (essentially interface layout instructions, used during the compiling process for the application), you can reach sizes close to those advertised in the original post. [AppleInsider]

1.

The way the processor industry is going is to add more and more cores, but nobody knows how to program those things. I mean, two, yeah; four, not really; eight, forget it.

Jobs claims that Apple's made a "breakthrough" in parallel-programming called Grand Central, which he alluded to in his keynote yesterday. He didn't, however, go into details about how it works and why it's going to revolutionize dividing up tasks into multiple processors in ways that other operating systems haven't yet.

What's also interesting is the ability to bring the GPU (your graphics card) into the processing role to help out your CPU. Apple's calling this newly proposed standard OpenCL (Open Compute Library).

2.

Basically it lets you use graphics processors to do computation. It’s way beyond what Nvidia or anyone else has, and it’s really simple.

It's vaguely similar to the way that Photoshop CS 4 will use your graphics card to help process image manipulation and help out in rendering 3D models as well.

Will there be more features like Time Machine? Not according to Jobs.
3.

“We’ve added over a thousand features to Mac OS X in the last five years,” he said Monday in an interview after his presentation. “We’re going to hit the pause button on new features.”

Seems to us that Snow Leopard won't be heavy on the features, but it will increase processing speeds for people who are heavy on the processing in their daily computing and have more than just a few cores—a place we're all heading to in the next few years. [NYT]

Yep, you heard right: Apple showed off the OS X 10.6 Snow Leopard, due out in a year, to the attendees at WWDC, and let some details slip to the public, including:
• Optimization for multi-core processors
• GPU friendly (actually GPU utilization of highly parallel tasks generally done on a CPU)
• Supports "breakthrough" amounts of RAM—16TB to be precise
• New "modern" QuickTime X platform
• Safari with 53% faster JavaScript implementation
Yes, as we've heard, this is a lot less about cool user features and more about boots-on-the-ground stability—or in Apple SVP for Software Engineering's words, "perfecting the world's most advanced OS." There's no mention of continuing PowerPC support, but then again, there's no word about discontinuing it, either. Here's more from the horse's, I mean, predatory feline's mouth. Update: The official Snow Leopard site is live.

Apple Previews Mac OS X Snow Leopard to Developers

SAN FRANCISCO, June 9 /PRNewswire-FirstCall/ — Apple(R) today previewed Mac OS(R) X Snow Leopard, which builds on the incredible success of OS X Leopard and is the next major version of the world's most advanced operating system. Rather than focusing primarily on new features, Snow Leopard will enhance the performance of OS X, set a new standard for quality and lay the foundation for future OS X innovation. Snow Leopard is optimized for multi-core processors, taps into the vast computing power of graphic processing units (GPUs), enables breakthrough amounts of RAM and features a new, modern media platform with QuickTime(R) X. Snow Leopard includes
out-of-the-box support for Microsoft Exchange 2007 and is scheduled to ship in about a year.

"We have delivered more than a thousand new features to OS X in just seven years and Snow Leopard lays the foundation for thousands more," said Bertrand Serlet, Apple's senior vice president of Software Engineering. "In our continued effort to deliver the best user experience, we hit the pause button on new features to focus on perfecting the world's most advanced operating system."

Snow Leopard delivers unrivaled support for multi-core processors with a new technology code-named "Grand Central," making it easy for developers to create programs that take full advantage of the power of multi-core Macs. Snow Leopard further extends support for modern hardware with Open Computing Language (OpenCL), which lets any application tap into the vast gigaflops of GPU computing power previously available only to graphics applications. OpenCL is based on the C programming language and has been proposed as an open standard. Furthering OS X's lead in 64-bit technology, Snow Leopard raises the software limit on system memory up to a theoretical 16TB of RAM.

Using media technology pioneered in OS X iPhone(TM), Snow Leopard introduces QuickTime X, which optimizes support for modern audio and video formats resulting in extremely efficient media playback. Snow Leopard also includes Safari(R) with the fastest implementation of JavaScript ever, increasing performance by 53 percent, making Web 2.0 applications feel more responsive.*

For the first time, OS X includes native support for Microsoft Exchange 2007 in OS X applications Mail, iCal(R) and Address Book, making it even easier to integrate Macs into organizations of any size.

*Performance will vary based on system configuration, network connection and other factors. Benchmark based on the SunSpider JavaScript Performance test on an iMac(R) 2.8 GHz Intel Core 2 Duo system running Mac OS X Snow Leopard, with 2GB of RAM.

Apple ignited the personal computer revolution in the 1970s with the Apple II and reinvented the personal computer in the 1980s with the Macintosh. Today, Apple continues to lead the industry in innovation with its
award-winning computers, OS X operating system and iLife and professional applications. Apple is also spearheading the digital media revolution with its iPod portable music and video players and iTunes online store, and has entered the mobile phone market with its revolutionary iPhone.

Contrary to rumors that Apple would drop PowerPC architecture support with its newest OS, a tipster and possible Apple insider was able to get his hands on the most recent build of the yet-to-be released 10.6, and found some evidence that Cupertino might be keeping the chip alive.

The tipster, who asked to stay anonymous lest he incur the wrath of Jobs, found a WWDC seed release labeled 10.6. After poking around a bit, here's what he got:

• Work has definitely been done on PPC-native drivers, which means that PPC is unlikely to be dropped.
• A number of drivers didn't load on a Core 2 Duo MacBook, because it was using a 64-bit kernel and the drivers were only 32. The kernel was not only 64-bit though.
• "uname -a" reports: Darwin localhost 10.0.0d1 Darwin Kernel Version 10.0.0d1: Thu May XX XX:XX:XX XDT 2008; root:xnu-1286~1/RELEASE_I386 i386
• Googling that kernel reveals that there might actually be SnowLeopard releases out in the wild already, processing Rosetta@Home protein folding clients.

If the tipoff is true, then it looks like Apple's not quite ready to let go and hand over chip building to a third party. Perhaps we'll have to wait for a few more builds before we get to a completely Intel-only Mac OS X.

If we had to guess one way or the other, this no-feature upgrade doesn't seem to be something Apple would do. They gave away 10.1 to 10.0 owners because 10.0 was lousy and needed a bugfix badly, but 10.5 Leopard works just fine. They probably wouldn't waste their goodwill on their point upgrades being $129-worthy by doing something like this. But you can't really tell what's going to happen at WWDC, really, and if there's a time to do OS news, it's at the dev conf. [Ars Technica]