Networked media player and High definition TV

[ilgiampi]

Hi everybody, I just took a look about a new networked media player to
buy (Netgear, Kiss, Ziova and what else). I would like to know if
there is one that is able to play HD DVD or Blue Ray disc, or if it i
s too early right now.
I'm quite new to theese technologies and I don't know if they are
processed like a normal DVD or if it is another stuff.
Anyone can help me, please?
Thank you.