Today began like any other day... I sat down to ROCK THE WORLD WITH FLEX and noticed that Adobe was pushing me an update for Flexbuilder; 3.1 to be exact. Puzzling... I didn't see any info about this and there are no changelogs to be found detailing what is in this update.
At any rate... I decided to let it finish and was surprised again to find that it wasn't just an update to Flexbuilder but an update to the SDK as well. We've now gone from 3.0.0 to 3.1.0. The update only had one 'hitch' to it. After updating, esentially a re-install, the 3.0 SDK targets were broken requiring me to go back into each project and reset the compiler target... no big.
At any rate - I still have yet to see a changelog from Adobe. Matt Chotin did mention in the Yahoo Flexcoders Group that he would take care of it. Just an fyi - he is at 360 Flex so... be patient on the update.