4K AAA games in the vein of the next Battlefield are hard to render even on current high-end PC's, so thinking that the very next upgrade will do them justice on consoles is a bit naive, sure. 2K or better 1080p, maybe, but not 4K. I can see how *some* less complex 4K titles would run on them, I'm just not excited over the resolution race all that much. As for the incremental upgrades, I think that the point of contention here is selling two consoles at the same time - I agree that it might brew some confusion, so it'd have to be handled carefully not to split the fanbase. Perhaps there needs to be more of a gap - give the old systems room to breathe for at least 5-6 years, discontinue them and then roll out the "PS5" or the "Xbox Two", keeping full hardware BC in mind. I guess that'd make them standard successors, but at least it'd keep everyone moderately happy and the end result would be the same - more games and higher fidelity.