What is latest version of Docker stable?

Just got update to 1.12.5 and it seems to be actually downgrade instead with old bugs in tow (like inability to download microsoft/iis images), also all my previous images are not showing up as available in “docker images” etc.

Only the beta version of Docker for Windows ships with support for running Windows Containers (confusing, I know). Beta is available here: https://docs.docker.com/docker-for-windows/

Latest stable ships with 1.12.5, beta is 1.13.0 release client.

I just received the 1.12.5 update but it looks like the release notes are not yet available:

Is someone on the hook to update that page?

They’ll be out shortly

Is it supposed to prompt to upgrade from beta channel to this version?

No, you have to install from the beta channel: https://docs.docker.com/docker-for-windows/