New syncing features added with iOS 5
iOS 5 brings several changes related to syncing and updating your iOS devices. The most significant change is wireless syncing and delta updates.
iTunes 10.5 or later will have a new option to Sync over a Wi-Fi Connection.
If you have iTunes set up for wireless syncing, your iOS device will automatically sync and back when it’s connect to a power source (say, overnight for charging). You can also manually sync it by going to Settings> General> iTunes Sync, then tap Sync Now on your device.
Another nice feature with iOS 5 is you can use your device while it’s syncing. Whether you are wireless syncing or syncing with a cable, you can still use it.
Prior to iOS 5 there was Slide to Cancel on the screen while it was syncing. Now, all you will see is a tiny syncing icon at the top of the iPad next to the Wi-Fi symbol.
Currently with iOS 5 beta iCloud is not fully functional but here is a look at all of the items you will be able to sync to iCloud, then to all of your iOS devices or computer.