Earlier this week we put up a post letting you all know RIM was planning to release the latest developer beta for the BlackBerry PlayBook pushing the OS into v126.96.36.1990 and now, the update has gone live for those waiting. RIM has included quite a few changes with this release, some of which I'm sure they left off the change log noted on the developer blog:
Just as before, you will need to whitelist your BlackBerry PlayBook in order to download this release. Keep in mind, it is intended for BlackBerry developers and not really intended for end-users. If you can't handle dealing with some possible bugginess or are not a developer then you may wish to avoid even looking at loading this.
Note: After installing BlackBerry PlayBook OS 2.1 you will not be able to backup and restore data back to 2.0.x. Apps downloaded or purchased from App World while using BlackBerry PlayBook OS 2.1 may no longer work on other versions of the BlackBerry PlayBook OS. Not all apps which work on OS 2.0.x will work on BlackBerry PlayBook OS 2.1.