User:SOTO/Forum Archive/The Panopticon/@comment-6032121-20190917111635/@comment-1827503-20190921073159

My proposal is as follows: "No trailer, even if narrative, can be valid unless the material it advertises has been released."

This maintains the ban on non-narrative "next-time" trailers, while allowing Ace Returns and its ilk to be valid immediately. (Under my proposal, the Volume Two trailer would have become valid once The First Doctor: Volume Two was released.)