Wifi sync is a new feature for Iphones which is part of the new IOS 5 upgrade.
You will need to have IOS5 Beta 2 or Beta 3 for this to work.
You will also need to have ITunes Beta 2 or Beta 3
The reason why it does not show up in ITunes for most people is because you have to have Mac 10.6.8 update. If you click the apple on the top left of your screen and click on “About this Mac” it will tell you what version of OSX you have. In my case I have 10.6.8.
Once you have the update installed and you plug in your IPhone in the summary screen Sync over Wi-Fi connection will show up as an option. Check that box and you will not have to plug in your IPhone to sync anymore.
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