The HDMI Forum, the nonprofit body that oversees the HDMI specification, recently announced version 2.0. There were numerous changes, not least support for higher frame rates than are possible with the current 1.4 specification.

Do you need to upgrade? Will your cables still work? What does this mean for the future of TVs? Do you care? Answers for all these questions (except maybe the last one) below...
HDMI 2.0: What you need to know | TV and Home Theater - CNET Reviews