As i wrote earlier i will have to consider stand alone video processing, this will add cost but money isn't my issue. But we don't know yet, if 4k becomes standard then displayport may become the new standard. This is much about the next gen consoles. As for 4k movies we simply have to wait for something much better than bluray(up to 10 TB). I am a little sceptical against hdmi 1.4a, it seams to be more troubles than benefits over 1.3 and the bitrate is still inferior to other standards.

http://en.community.dell.com/dell-blogs/direct2dell/b/direct2dell/archive/2008/02/19/46464.aspx