If it doesn't sell, Microsoft won't support it anymore. It's really as simple as that. Could happen next year, could happen in 2016, who knows. But if it really is important to you how long a system is supported, then you should definitely go with a Playstation. There has never been any system from Sony that didn't get support for less than 10 years. For all others, your 360 won't stop working just because it isn't supported anymore. You can still have fun with it, my SNES is proof of that.
I don't really see the point. Such a deal is in no way a guarantee for ongoing support. They're just trying to get the 360 into families who can't really afford it. That's all. There is no guarantee that the consoles will be getting new games for at least two years.
唯一無二のRolStoppableに認められた、VGCの任天堂ファミリーの正式メンバーです。光栄に思います。
