You may want to purchase Wi-Fi Sync 1.1 now so that you can get the free upgrade to Wi-Fi Sync 2.0 which is coming soon…
● Sync your iPhone over Wi-Fi, 3G, EDGE and/or VPN
● Major stability and speed improvements
● Native support for iPad & iPod touch 4G
● Direct integration with iTunes
This app was rejected by Apple several months ago, but iOS jailbreakers can find Wi-Fi Sync in the Cydia Store.