The new beta version of the 3.2 SDK (beta 3, for those of you keeping track) is now available for download. The Apple developer site will likely be getting slammed over the next hour or two, so plan your downloads accordingly. The beta is available to all paid members of the iPhone developer program, with at least the $99/year membership. You will need your credentials to sign in and download the new SDK.
As usual, the new beta SDK is under NDA, so please go check out the details for yourself to get further information about the changes between this beta and the last. Good luck, and happy programming!
Update: 6PM Pacific. It's baaaaaaaack.
Update: Here then gone? Readers report that Apple seems to have pulled Beta 3 for the moment and when I returned to Apple's iPhone developer site, I saw the same. Watch this space. We'll update as we find out more.
Update: This was not an accidental upload, per Michael Jurewitz, the Mac and IPhone Applications Frameworks and Developer Tools Evangelist: