That would be Ultra High-Definition.

The Consumer Electronics Association (CEA) Oct. 18 put a name to the next generation of home displays, putting the Ultra HD tag on TVs with more than eight million pixels of resolution, four times the resolution of today’s widely available HDTVs.

CEA’s Board of Industry Leaders unanimously approved the term and minimum requirements for a set or projector to earn the Ultra HD designation, which requires resolution of at least eight million active pixels (minimum 3,840x2,160). Displays must have an aspect ratio of at least 16x9 and must have a digital input capable of carrying native 4K video, instead of relying solely on up-converting.

Current Blu-ray Disc players do not support Ultra HD video. But for content, issues are already being addressed: According to Sony Pictures, nearly 60 films have been mastered in Ultra HD since 2004, and Sony and Luxembourg-based satellite company SAS Astra said they successfully broadcast an Ultra HD transmission in September.

So far two TVs on the market meet the Ultra HD (4K) specifications: Sony XBR-84X900 for $24,999, and LG's 84LM9600 for $20,000.

Consumer Electronics Association Gives 4K a Name | Home Media Magazine