I just bought a PS4 in January, so I very much hope that this is the route they're taking. If they have to upgrade, don't alienate existing users.
On the other side of the coin, I really can't see a whole mess of people being so unhappy with their PS4s that they rush out to get a NEO. Doesn't anyone who cares that much about the visual fidelity of their games already have a PC anyway?
CommieNinja's comments