I'm not sure what rock you've been living under if you believe Minecraft is last week's news. I might have thought so too until I started noticing that kids are more into Minecraft than at any point in the past. I think the cultural impact of that game has thus far been underestimated.
Outside of Farmville, Candy Crush and that class of social games I've never seen a game cross gender lines like Minecraft. I can't recall every seeing a game with such widespread, universal appeal, period. Super Mario Bros doesn't even come close. Walk through any store with a Minecraft book or toy in hand and you'll have a half-dozen kids comment on it. Every boy I've met under 14 plays the game and seems to do so on a regular basis.
It's possible Minecraft is peaking, but I personally think this is uncharted territory for any game. It's on the level of a Facebook in it's ubiquity. Someone will eventually unseat both, but it won't be easy. In the meantime there's so much that can be added to Minecraft to sustain that popularity, and significant updates still come on a regular basis.
Not that Microsoft couldn't kill the game by sticking everything behind pay walls but hopefully they'll be smarter than that.