Adorama is the first retailer that I am aware of to list the Canon EOS M as discontinued. Searching for “EOS M” on Adorama’s site automatically directs you to a page containing discontinued items, and only displays used items. Additionally, the previous product listing for the EOS M now says “We are sorry, this item is no longer available.”
Perhaps the recent $299 fire sale for Canon EOS M kits depleted Adorama’s supply?
If you have been thinking about picking up one of these very discounted prices, you may not have much time left to find one at all.