I, too, believe that Blu-ray is going to win the war, but what did Yogi B. say? "It ain't over 'til it's over."
Any win by HD-DVD now would require an incredible effort, but I will count it over when the HD-DVD camp announces they're giving up. I've seen too many weird things happen over the years, so I'm not going to enumerate my barnyard fowls before they're incubated.
Sony has to be sighing with relief at this announcement, not just because they have a lot invested in Blu-ray, but because of the PS3. HD-DVD was never a part of the 360's configuration, just an add-on, so Blu-ray winning won't really affect the 360 gamers. If HD-DVD had won, every PS3 sold to date would have an orphaned optical drive. Ouch!
Sony bet the PS3 farm on Blu-ray... good thing for them it looks like it's going to win. 
