If it lowered their development costs a lot, then I can certainly understand it. I may check it out this weekend. I've been running Win7 for like 9 months now (I skipped Vista), and I would never go back to XP. From what I've read about DX9 vs DX10/11 development, I can't blame them for wanting to ditch DX9.
"The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts." -- Bertrand Russell (I think...)