The Keep is available to rent or purchase in SD on Google Play or YouTube: https://play.google.com/store/movies/details/The_Keep?id=UjAqWOnXu18&feature=search_result#?t=W251bGwsMSwyLDEsIm1vdmllLVVqQXFXT25YdTE4Il0......no idea if it's the 4x3 video master or 2.35:1. May look further into it....anyone else interested?

I was also able to see this recently on 35mm, as expected it was gorgeous. Hopefully more news of this will come, as Paramount (or Warner?) seems pretty lax about distributing this digitally.