iTunes 8.2 now supports iPhone or iPod touch with the iPhone 3.0 Software Update. iTunes 8.2 also includes many accessibility improvements and bug fixes.
iTunes 8.2.1 provides a number of important bug fixes and addresses an issue with verification of Apple devices.
The wording here clearly hints at the blocking of non Apple devices. A post at PreCentral [via MacRumors] seems to confirm this...
At least on this Mac, iTunes sync isn't working after the 8.2.1 update. We were wondering if this day would come after the back and forth between Apple and Palm on the issue. It's as-yet unclear exactly what method Apple is using to block Pre sync, but we suspect is wasn't easy. ...Which means we also suspect it might not be easy for Palm to turn it back on.
As usual we recommend iPhone users wait a bit before updating to confirm that there are no adverse affects for jailbreaking and unlocking.