What is the release date for the iPhone iOS 4.3 firmware update?

What is the release date for the iPhone iOS 4.3 firmware update?

UPDATE: iOS 4.3 was released ahead of schedule on Wednesday March 9, 2011.

Apple will release iOS 4.3 for GSM iPhones (AT&T only) on Friday March 11, 2011.

The firmware update will be available for free via iTunes. This operating system update will add features including Personal Hotspot and iTunes Home Sharing. There are also improvements coming to AirPlay and Safari with iOS 4.3.

Read more details on iPhone iOS 4.3 and stay tuned for more information as it becomes available.