Have you noticed all the Zune HD unboxing galleries around the Interwebs right now? While it hits stores today, no one's been able to completely review it yet—Microsoft has only just posted the required Zune 4.0 software online.
We're working on the full review as I type this, but while you wait:
• Zune HD Hands On: Photos and Video Tour
• Zune HD TV Interface Walkthrough
• Microsoft Says No Zune HD Outside the U.S (For Now)
New features in the Zune 4.0 software include quickplay, smart DJ, mini mode, mixview, and the Zune Marketplace with apps and games. Microsoft says it plans Twitter and Facebook apps later this year, and some of the first 3D games for the Nvidia Tegra-powered player will be Project Gotham Racing: Ferrari Edition, Vans Sk8: Pool Service, and Audiosurf Tilt. (Meanwhile, older Zunes can update to software 3.2)