There are many Microsoft apps written in MFC. Sometimes its just not obvious... (to name a few: Bookshelf, Bob!, WordArt OLE server, Visual C++ (of course), Win95 paint, Win95 WordPad, some portions of Win95 FAX software, some Win95 games I know of...).
In the future, there are more apps coming out using MFC. I don't have a way to track all of these uses, so there is certainly more that I'm not aware of or can't remember. I don't expect Word or Excel to ever use MFC -- they have way too much legacy code and they don't see any customer benefit to rewriting to MFC. But my point is -- definitely for new code, Microsoft is using MFC. Even some "old" code is taking advantage of MFC in future versions.
Dean McCrory, MSMFC, 6/8/95