OOXML and the continued, though as yet unactioned, threat of patents over Linux both come to mind.
Microsoft is still every bit as evil as it once was. The chief difference between now and the 1990s is that its market, at least on the consumer side, is shrinking. For now that means they're forced to live with major open source projects like Linux, but I refer you back to Ballmer's patent threats. If it really goes down to the wire, you don't think Microsoft would try to litigate Linux out of existence? After all, we already know it bankrolled SCO's attempts.
Microsoft has never been, nor shall it ever be, a friend to open source. It hates it, fears it, is forced at times to cooperate with it, but you don't think there's a day that goes by that its executive don't wish open source would shrivel up and die?
There's no change in sentiment, simply in ability to act on the sentiment. The mere fact that they're sending out their latest psuedo-FOSSite quisling demonstrates that Redmond is the same as it ever was.