I've noted the comments here about how this is old news: that's true. But it will be novel to some people who didn't live through it, and even for those who did, it's a necessary reminder. Microsoft is ruthless, unscrupulous, and unethical: they will do anything. They're not the only ones, of course, but they're arguably the most dangerous because of their size, wealth, and longevity. They're the enemy of open standards. They're the enemy of open source. They're the enemy of open protocols. They're the enemy of Unix. They're the enemy of Linux. They're the enemy of security. They're the enemy of privacy. They've always been the enemy and they always will be, because it's in their DNA: it's impossible for them to change.
So any time -- ANY TIME -- there's some statement or initiative or announcement that they're going to support open standards/source/etc., any of the things I listed -- the first things that should come to mind are these wise words of Ash:
"It's a trick -- get an axe."