Topic on Talk:The big list of third-party DRM on Steam
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It should be clearly presented as a rumor, but not removed from the page altogether. It's essentially regarded as fact at this point and Microsoft has yet to make a comment saying it isn't going to happen, which would be logical from a PR standpoint should they have something good to say.
As for your latter comment, I think the self-sourcing is definitely something we may want to talk about. I'm not sure how we should handle that.