It looks like Apple has managed to finally convince some of the carriers as folks at 9to5Mac have just reported that it will be possible to make FaceTime video calls over 3G.
9to5Mac has received a screenshot, which indicates that Apple will enable this feature for carriers that allow it.
If the final version of iOS 5 includes this feature then it should also be available for iPad 2 3G users.
Jailbreak tweaks like My3G already allow iPhone 4 users to make FaceTime video calls over 3G and tweaks like FaceTime Activator and MiddleWhat that enable the feature in unsupported countries like UAE, Qatar, Saudi Arabia, etc.
Strangely, while FaceTime has been restricted over Wi-Fi, Apple has approved apps like Fring that support video calling features such as four-way group video calls over 3G.
It will be interesting to see if FaceTime video calls over 3G will be enabled for AT&T and Verizon iPhone 4 users. What do you think?