I don't see it coming back though, since the original had it, then it went away.
Remember Firewire? It has come and gone in various incarnations on the Intel Macs. The first 15" MBP didn't have FW800 nor did it have the Dual-Layer Superdrive, both of which were present in the 15" PowerBook and have made appearances in subsequent MacBook Pros. The 13" MacBook (Aluminum) also dropped FW400, but it remained in the 13" Poly MacBook and appeared when the Alum. Macbook was moved to the Pro family.
So to say that Apple has never added back features that it has taken away would be incorrect.