If they wanted to assure the "core" that they would continue to be catered to, he would have said they were going to continue to invest in new IP in addition to the current franchises. What I took from the quote is the same thing I took from the earlier statements: the "core" games will be established franchises (Gears, Halo, Forza, Fable, etc.), and new investments will be made in the Kinect space. (And most likely, those "core" games will be "Kinect enhanced".)
There will be a new one here and there, but the focus has shifted. Which is fine, and what I expected. They basically have a new platform launch to support.