⁃ Network Migration requires OS X 10.7.3 or later in this Developer Preview
⁃ International users may be unable to enter a Wi-Fi password while in Setup Assistant. Users can select Other Network Options and continue setting up their system without a Wi-Fi network
⁃ On systems with FileVault enabled, the login window may be displayed incorrectly
⁃ Rotating an external display may cause a panic on AMD Radeon-based machines
⁃ QuickTime screen recordings may produce corrupted videos or cause an exception when run on machines with NVDIA graphics
⁃ Installation of Final Cut Studio 3 may cause a hang unless Automatic Graphics Switching is disabled in Energy Saver Preferences
That's good, now I get to wait for the "up-to-date" thing to kick in before I can get it.
Now you can build apps for Mountain Lion and submit them I'm guessing.