I doubt they process customer feedback in the matter of a few days :). Besides, there's a history of AMZN doing things just before or just after a Windows Azure

I doubt they process customer feedback in the matter of a few days :). Besides, there's a history of AMZN doing things just before or just after a Windows Azure announcement. See their announcements always timed the week before MIX or PDC or the response to various other pricing changes, etc. Trust me, Amazon keeps a very close watch on the competition. :)