OMG, this was just announced and now Sony is already copying Nintendo again:
http://kotaku.com/5017378/sony-announces-in-game-xmb-trophies-coming-to-ps3-via-240-firmware
In seriousness, did anyone notice that the inventor of this is Koichi Hayashida, the director of the NES Remix series. This is, indeed, the system used in NES Remix, and for some reason they decided to file a patent on it last October. Perhaps they felt the mechanic in NES Remix was unique enough to protect or they feel it should be adopted by all games. Nothing beyond that can be inferred by this patent, but hopefully they do implement an achievement system. I never thought I would like it, but it's fun on my XBox and it was good in Xenoblade, too.