This is hardly news by now. I post it only because it is definite confirmation and a few more details than we had before.
I hope MS can pull this off. I am not hopeful. I can imagine hundreds, thousands, even millions of false positive reports by the WGA software, leading to no end of problems and huge customer resentment. It is even possible that MS could even end up killing their customer good will, which is already stretched thin. I know this can be done well, but somehow don't trust Microsoft to manage it.
We shall see.