Since it was called 7-2 elsewhere, it sounds like 5 justices issued the majority opinion, 2 issued a concurring opinion with different reasons, and two dissented.
This is a MAJOR victory.
An update to the AP story:
He (Scalia) and Justice Clarence Thomas wrote separately Thursday to say U.S. District Judge Emmet Sullivan "clearly exceeded" his authority in ordering the administration to release records.
Justices Ruth Bader Ginsburg and David H. Souter said in a dissent that Sullivan should be allowed to consider what records should be released. They said it was not enough for the Bush administration to request blanket protection from having to make records public.