So for anyone that has not yet seen it, here is the reported changes for 2.2. Also, some preliminary tests have been performed on 2.2. Winterboard, Quickgold, and SBSettings are working (although every toggle has not yet been tested). Cydia has an update and is also working. Note, the 2.2 jailbreak is not yet out [...]

So iTunes 8.0.2 is out and FW 2.2 is out. This is a reminder: DO NOT UPGRADE YET. FW 2.1 is very stable. Hold off until a jailbreak is ready. It should not be too long of a wait. Also, if you are doing any unlocking, you definitely need to hold off on the upgrade [...]