DisplayPort isn't the only technology finding its way into computer monitors. NEC has introduced a new line of their AccuSync LCDs with HDMI input.
These new monitors still feature the familiar DVI port, currently the most common PC video interconnect.
With HDMI monitors already available and DisplayPort monitors on the way, it's anybody's guess which display standard will dominate in 2008. DVI is the most commonly used in the PC world, while HDMI is found in every new HDTV. DisplayPort also shows a lot of promise as a technology.
Fortunately for consumers, these formats will all be compatible with the right cables. DVI to HDMI cables are already available, and work perfectly in both directions.