James McCartney ( Paul's son) says he's already talked to Sen Lennon( John's son) and Dhani Harrison( George's son) and claims there is interest in forming a band called either Beatles 2 or Beatles 2nd Generation.   The only person who doesn't seem to be enthused about the idea is Zak Starkey ( Ringo's son).   All of the Beatles' sons are accomplished musicians.

Take a look at James McCartney when he was on the Letterman Show.