Apple this past Friday released the second beta of iOS 5 to developers. One of the newly included features is support for over-the-air WiFi syncing.
In iOS 5.0 beta 2, wireless syncing is now available for the Mac. It requires iTunes 10.5 beta 2 and OS X 10.6.8 or Lion. You will see an option to enable wireless syncing when you connect your device to iTunes with the USB cable. It is recommended you perform your initial sync with a cable after restoring your device.
Wireless syncing is triggered automatically when the device is connected to power and on the same network as the paired computer. Or, you can manually trigger a sync from iTunes or from Settings -> General -> iTunes Sync (same network as paired computer required). Be sure your device is plugged into a power source when performing Wireless syncs.
If you find issues with apps, media and/or photos synced to your device, you can reset then resync. From Settings -> General -> Reset, choose Erase all Content and Settings. Then reconnect to iTunes and sync again.
In this beta, iTunes may incorrectly report Photos as “Other” in the capacity bar. Photo syncing otherwise works as expected.
Below is video of Wi-Fi syncing in action courtesy of the iPhoneDownloadBlog. Note that this only works on devices running the second beta of iOS 5 and that iTunes 10.5 beta 2 is also necessary.