Literally every source on the interwebs is reporting that Apple has just released Beta 2 of their universe-denting SDK (Software Developers Kit). This new version now sports a working Interface Builder and an update to Xcode 3.1.

Warm up your downloads then get yourself a tasty beverage, because at 1.4GB and with $100 million on the line, even Apple's servers may take a little while getting it to you!