The only info I was able to find with a quick Google search was the Microsoft Windows lifecycle fact sheet
, which indicates that the last sale dates for both retail and OEM versions are still TBD. Now, it is certainly possible
that TBD means "when current stock runs out", but I wouldn't just assume that without some corroboration from MS and/or their channel partners.
If the world isn't making sense to you, you're either drinking too much or not drinking enough.