This may be old news but couldn't find any other details of it:
"Paramount Home Entertainment has revealed that March 4th will mark the last titles the studio releases on the HD DVD format. All titles announced with release dates after March 4th have been canceled for their HD DVD releases (the DVD releases will stay on schedule). This includes the March 11th release of Dreamworks' 'Bee Movie' and the April 1st release of 'Sweeney Todd'.
Only a few days ago, DreamWorks CEO Jeffrey Katzenberg stated that his studio would remain HD DVD exclusive until they were notified by Toshiba that their exclusivity deal had been terminated. With this announcement, it appears that Toshiba has contacted DreamWorks, and resolved any outstanding issues.
No word from the studio on when they would start announcing new Blu-ray titles, but now that the studio has announced their exit strategy for HD DVD, we should hear something soon."
taken from
here
Hopefully the other HD-DVD exclusive labels will join the blu side very shortly.