The largest company still committed to HD DVD, Paramount (which owns DreamWorks as well) is planning on dropping the HD DVD format. This is the sort of thing that was to be expected after Warner dropped the format. The only big name still creating HD DVDs will be Universal. Now that Warner did this, Paramount seems ready to follow, and if Paramount leaves, Universal probably will give in too.
Note that Microsoft - in their XBox 360 video game console - has also supported HD DVD. Even Microsoft doesn't always back a winner.
Once one format becomes "the standard", expect prices on Blu-Ray DVDs to fall.
Financial Times article