Hmm... Downloading a DMG without knowing if it was not modified or not... I will rather wait for the official release in a couple days and get it from Apple. At least as a regular user I will do that... Being an official iOS dev, the GM is already on my iPhone and iPad.
The features I love most in iOS5:
- Multitasking gestures on iPad
- New notification view and widgets (only weather and stock at the moment)
- Wireless syncing