Warner Brothers studios has officially defected to the Blu-ray format, and now Paramount seems poised to do the same. This is all but the end for the HD-DVD format, which is a real shame. Granted, there's no real difference between the two formats (none that are apparent to the common consumer, anyway). Blu-ray discs may end up being more expensive, due to the fact that they cost a little more to manufacture. They also continue the stupid "region coding," where certain discs will only play in the players purchased in a specific geographic location.
If for no other reason, I wanted HD-DVD to win the "format war" because Blu-ray is backed by Sony. Any day that Sony fails is a good day in my opinion, and it's a shame that the movie studios decided to take the low-road. Time will tell how well this format takes off.