Apple released its first update to iOS 5 today with iOS 5.0.1. This is the first public release of iOS to come as an over-the-air (OTA) update, and is also delivered as a delta (just the changes) version.
The main change in the update was to address battery life issues. It also brings multitasking gestures to the first generation iPad, and a few bug and security fixes.
It weighed in around 40 MB on both my iPhone 4 and iPad 2, and took about 10 minutes and 5 minutes to fully update, respectively.
The process was painless, quick, and fantastic. I, for one, am a fan of the OTA update process.
To update your iOS 5 device, visit
Settings > General > Software Update.