This upcoming CES event in Las Vegas (jan 10th-13th) will be Microsoft's last.
Microsoft announced today thru its PR guy Frank shaw, that the Tech Giant will no longer be making any appearances at the show. and that this forthcoming CES event will be its last.
this is largely due to the fact that their product release dates don't usually match the CES event january timing.
Microsoft has been a part of these events for 20years.
[UPDATE] CEA (the people behind CES) released a press statement pretty much saying "we are not the concerned at the least"
sources: the Verge, CNET, engadget