For the core Sony fanbase, this news means little to nothing to them (at least it doesn't for now), but for the success of the PS4 as a marketed next generation console, statistically, this is potentially bad news for the company (not significantly bad though, just missing out on potential cash).
The fact of the matter is, motion control games, when done right, are fun and do sell extremely well. When Microsoft saw the success Wii Sports and a bunch of other motion control based games had, they quickly jumped on board with Kinect and made Kinect Adventures which, while falling short of actually offering a lot of replay value, is currently the best selling Xbox 360 game and is the 18th best selling game of all time on a single platform. Now that Kinect 2.0 is bundled in with every Xbox One, Microsoft can now expect quality software support of Kinect 2.0 on the Xbox One which will give the console a significant lead in both value (which turns into sales) over the PS4 because it will actually have unique next-generation features like the Wii U ultimately leaving the PS4 in the dust as the console not only currently sporting the least amount of exclusives, but also the console with the least amount of next-generation features.