UltraHD Blurays and players will start coming by Christmas 2015. Still buying blurays

[Aragorn the Elfstone]

That's quite honestly ridiculous, considering most new films are still finished at 2K. It's the older films that would actually benefit the most.

And if the studios wanted this to be an "evolution" of the Blu-ray format, they'd have to stop releasing the regular BD editions and just sell the UHD packages. But they won't, and therefore it will be seen as a "new format", not an evolution.