Apple released iOS 5.1.1 today this morning and I installed this release on both my iPhone and iPad in about 15 minutes. Here are some observations:
- Wi-Fi - You can install this release over your Wi-Fi connection, you do not have to be connected to your computer.
- Power Source - You do not have to be connected to a Power Source, although Apple warns you that it will save you device battery life.
- Here's the Link to Apple's iOS 5.1.1 Support Article with a list of the bug fixes and security updates.