It's good news but I wouldn't get too excited over this. I've seen big companies say they'll back Linux and in the end do very little. I'm not saying that they don't contribute, it is just very small for so much fanfare. The tinsy bit they do put out is taken by the Linux community and used though, so this is a good thing.
Also, huge companies are slothful slugs, nothing in a big company is done with any kind of speed. Funny thing is some companies say what they want to do for Linux and then a few hackers just go and do it before the company even gets out of the meeting.