Today at the live event, which our own Medical Leave Steve showed up to host, we got a peek at the pending version of iOS 4.3. This will be out on March 11, along with the next generation iPad, also announced at today's event. At first glance, the important differences depend on which iThing you're actually running it on.
First and foremost to iPad owners is the following: A rollback of the switch function! Now you will get the option of what that little flippy switch controls: orientation lock or mute.
There is also a marked improvement in iOS 4.3 if you have a GSM iPhone: P