Apple has released iTunes 10.2 for the masses, in particular to add support for upcoming iOS 4.3 and iPad 2.
Whatâ€™s new in iTunes 10.2
â€¢ Sync with your iPhone, iPad, or iPod touch with iOS 4.3.
â€¢ Improved Home Sharing. Browse and play from your iTunes libraries with Home Sharing on any iPhone, iPad, or iPod touch with iOS 4.3.
For information on the security content of this update, please visit: support.apple.com/kb/HT1222
This new version is safe for people with jailbroken iPhones as my iPhone 4 and iPad works fine with it (both on untethered iOS 4.2.1).
Check Software Update to download this latest version.