Apple has just seeded iOS 5.0.1 to developers. Here's what they state is included in the update:
"iOS 5.0.1 beta contains improvements and other bug fixes including:
- 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
- Contains security improvements"
Many uses have been reporting problems with their battery life since updating to iOS5 (I haven't had any problems), so this should be a welcome update when Apple release it in the next couple of weeks.