If you're talking about their actual tour, Utsukushitte Gomen ne, they still have a few performances and they usually only film on the last day of touring so it might take a while...
Oh I don't know, I don't follow their blogs that much so you may know a little more about this than me Are you sure it says it was for the DVD of the concert? If so it shouldn't take long but I need to confirm if they always film on the last tour day or not now...
Okayy then, thank you for digging it up! it's good to know that they don't always tape on the last day then (maybe this is only applicable for graduations)
Then you're right, the DVD and Blu-ray shouldn't take too long to be announced too