Apple has seeded iOS 5.0.1 to developers in the iOS Dev Center. The beta adds enhanced multitasking gestures for the original iPad, fixes the battery life bug that has extensively plagued iPhone 4S users, and adds several other fixes.
Apple also issued a statement prior to seeding this developer beta saying that it was aware of the battery life bug in iOS 5. The public 5.0.1 update is expected to drop in a few weeks.