We already have Thunderbolt, Thunderbolt 2, DisplayPort and miniDisplayPort but now the Video Electronics Standards Association (VESA) has just announced that it is working on defining a micro-DisplayPort standard.
The upcoming micro-DP will be aimed at smartphones, tablets, ultra-thin notebooks and other systems that require a super-slim connector to drive external displays. The upcoming micro-DisplayPort connector will be much smaller than the current mini-DisplayPort connector, which is already small. Better yet, micro-DisplayPort will be capable of driving 4K displays, and beyond.
VESA will be pushing for backwards compatibility with micro-DisplayPort, which will help as there are more and more DisplayPort-capable devices entering the market. We should expect the group to find a new standard by Q2 2014.