May as well toss HVD into the mix. Will be ready in as little as 3 years. The main benefit over Blu Ray is capacity; 50 GB (I know it's expected to go higher) for Blu Ray vs 3.9 TB's for HVD.
Full Aperture 4K and Sony 4K are resolutions of 4096 x 3112 and 4096 × 2160 respectively. SOLED based HDTV's will be capable of these resolutions without increasing screen size.
The rEVOLution is not being televised