Since I made the post below, I think it's hilarious that Apple eventually "merged" DisplayPort and Light Peak (now called Thunderbolt) into one connector!
Strange thing is that across the industry different connectors will use the LightPeak technology - it won't be using the DisplayPort connector for everything. Not sure I can remember a precedent for that.
HDMI keeps getting improvements - and I don't think manufacturers are too excited about spending money to put two interfaces on products they make.
Although, I keep hearing about a new Intel technology called Light Peak that was apparently pushed for by Apple - it seems to drive HD displays, 10gb/s bandwidth. It's supposed to come out next year. Another competitor?