EOSHD has an article on the new h.265 Codec which is ProRes 4444 Quality at 1% of the File size. Of course i doesn’t talk about the computer power that is going to be needed. And that is going to need some power. Serious GPU power I am thinking.
Still you can try it right now with Cinemartin’s compressor, but it is not cheap! And the compressor is made for Windows 7, and I have no idea what will actually play it back right now, but the compressor also does ProRes. Would love to give it a try, but it is way too expensive to play with right now.