Re: Microsoft launches MS-DOS Mobile for Lumia smartphones
It could still be available but here is what they said in the link in the first post:
Before you start complaining how ridiculous this sounds, go check today’s date. It’s April Fools Day! Isn’t this kind of funny? We don’t want to ruin all the fun, so we suggest installing the app and navigating through the command prompts. Watch and re-watch the video for some Easter eggs as well. Hint: there’s an interesting game you can play.