New version of the Wi-Fi Sync app for Jailbroken iPhone is out. The new version allows you to sync with iTunes over Bluetooth or 3G connections. Wi-Fi Sync enables wireless syncing with iTunes at the touch of a button. Never go looking for that USB cable again. Sync from the car, bed or shed whenever it suits you. Available now on the Cydia Store for jailbroken iPhone, iPod touch and iPad. You need to download the latest beta(works on Mac for now) and ‘Wi-Fi Sync’ app from Cydia. - daily iphone blog
Wi-Fi Sync
Via Daily Iphone Blog