What's interesting is that this pretty much guarantees B/C going forward.
As always Entremet bringing the voice of reason.
I see this, combined with the ability for each individual consumer to decide when they want to upgrade is a huger leap forward for consoles.
Think about it this way: Remember the moment when you first thought that the last console generation was lingering too long? Now, imagine that, at that moment, you could simply buy a new piece of hardware and instantly you get better looking games that run at higher resolutions, etc but you also get to keep all of your existing games, accessories, controllers etc.
You don't have to wait for new hardware generations, replace your library, etc.
To me, it seems like the best parts of PC gaming but simplified around a unified user experience built for controllers and living room gaming in a way that the open nature of PC's simply cannot deliver. And for those who do want that more open PC gaming experience? No problem: Your games and saves will be there for you if you jump to PC.