AT-X station now lists ep. 12 of Girls und Panzer on its schedule for the 9th of January (Wed.) starting from 21:00 JST.
The release date of the episode had to be changed after the show’s initial airing schedule was pushed back a week following episode 5 because of production issues.
Whether the above-mentioned release date will be the fastest airing of the episode remains tentative.
At least it’s not a several month’s wait… (glances pointedly at Saki-Achiga).
EDIT: It now seems increasingly likely that we will have a several month’s wait, with a possible release around March… orz