Right, it's been out so long that it's believed to be in mods. On past occasions if an aircraft was out of service for the time it would take to do mods and the mods never actually happened then simply it would be reset on the wiki to indicate that it never happened.

It is unusual for an aircraft to be out for a week when there isn't a maintenance issue that came up (e.g. a damage). If it was a small maintenance visit it would be flying already, and apparently the cabin mods come along with a major maintenance visit. That makes me believe that it is getting a heavy maintenance check and the cabin mods.