This is a bit disturbing. I don't trust Microsoft and since they're going to offer a competing technology in Windows Vista (nee Longhorn) I would be very, very suspicious if I was Adobe. Besides, it's no secret Microsoft is gunning for Adobe's market-share in consumer image software.
That'll be fun. We know they're going for PDF with "Metro," but I don't think even Microsoft can force its way too much into a multi-billion dollar industry grounded in PDF and Postscript workflows.