Reggie, I dont think you'd be able to update the Gen 6 to Gen 7 simply because of all of the added features of the 7. With that many more options, there is that much more wiring...It'd be a pain to have to add all the extra wiring for injectors, additional sensors & whatnot, plus the cost of adding all that and updating, you'd be better off going with a nice new harness and 7+...
I think once the new 7+ is actually released there will be an announcement of some sort made, if it is still in development, the only thing that is going to happen is confusion because the public would probably be calling & quuizzing whoever there answers the phones just taking up more time...