The Forum has achieved high ranks in Japan on its first day of sales. The DVD ranked #1 and the blu-ray #2 on Oricon’s daily charts for May 12th. It also did well in CD Japan and Amazon Japan’s own rankings. You can find all of them listed here.
As always, we don’t know the length or amount of songs though, but as always, expect it to be missing a few songs. Expect a full DVD/Blu-ray to be released a few months later.