The first update for iOS 5 is out! The update does these things:
Fixes bugs affecting battery life
Adds Multitasking Gestures for original iPad
Resolves bugs with Documents in the Cloud
Improves voice recognition for Australian users using dictation
Some people still have problems with the battery life but, this fixes some of the battery bugs.
You can now update without a computer, just tap Settings, then General, then Software Update.