Though iPhone OS 4's real potency will come when developers seize the new tools and build multitasking apps that do crazy, crazy things, many of the OS's inherent secrets are coming to light. Updated: More secrets.
You might have spotted some of these screens in our thorough hands-on videos, but most of nuggets below are new discoveries. If you are playing with the iPhone OS 4 beta and notice some cool features we didn't spot, send a screenshot our way (to Rosa or Wilson), making sure to black out any embarrassing personal data, and we'll verify it and add it to this compilation.
Thanks to Dan E., DC, Zach, Lazardo, Zev, Mike O., Jeff H., Frank G., Jason, and Jeffrey W. for sending in screenshots and tips.
To bypass gallery view, click here, but no guarantees of how good the pics will look.
