Here is my 2.5 cents (Adjusted for inflation.)
The good: 4K60/50P 4 times better than 1080P/60p
significant increase in bandwidth (up to 18Gbps)
Backwards Compatible (I just hope they shield it better)
dynamic auto lip-sync (I hate it when the video and audio are a bit off.)
Up to 32 audio channels for a multi-dimensional immersive audio experience
Up to 1536kHz audio sample frequency for the highest audio fidelity
The Maybe:
Simultaneous delivery of dual video streams to multiple users on the same screen
Simultaneous delivery of multi-stream audio to multiple users (up to 4)
Support for the wide angle theatrical 21:9 video aspect ratio
CEC extensions provides expanded command and control of consumer electronics devices through a single control point
The Bad: no 1080/120P or 240P for 120 frames per eye in 3D
No 4K/120P
No 4K/240P for 3d with 120 frames per eye in 3D
Note: And I think they added a 3D 1080P/120 so that each eye could get a 1080P/60 signal, but I'm not seeing it the standard.