All signs have been pointing to Apple releasing iOS 4.3 in the very near future, with speculation that Apple's 4.3 announcement could even come next week. Most speculation is centering on an Apple announcement taking place within the next 10 days.
Besides an iOS 4.3 announcement, Apple is rumored to be announcing the iPad 2, the Verizon iPhone's "Personal Hotspot" feature on AT&T, and an official release of in-app subscriptions.
Whether or not all of the speculation is accurate, it's evident that Apple will be holding an event in the near future...