iOS 5 for iPhone iPad available now

Today is the day of the new iOS 5 update for all Apple devices users.
The main updates with IOS 5 will allow your iPhone and iPad to:
1. Sync your iPhone or iPad without computer. You are now able to synch with WIFI.
2. All your data will be saved on the iCloud
3. An equivalent of BBM for iPhone and iPad with iMessage that allows you to chat and share files with all iOS 5 users for free.
4. A notifications center to gather in one place the info you needs from different apps.
5. A better Safari browser with full integration of Twitter (will Apple buy out Twiiter?)