Film at 11

Quite simply, it means there's more to come, but it's primarly a sarcastic phrase to emphasize an overexaggeration. For example, "Imminent death from AI predicted. Film at 11." 

Film@11 is meant to be a funny kind of "cop out" at the end of a news article or explanation, as if to say, "it's too early to draw any conclusions that you'll hold me to later".Usually seen in newsgroups or chat rooms as a reaction to an overwrought argument, it signifies the debate will continue to rage on. Film@11!

Historical perspective: The phrase is in reference to late-night, local news TV commercials that sensationalize the day's drama data storm into a short, flashy reel.