Not long ago news was out that Lionhead Studios were working on a second AAA project alongside Fable Legends - one that had nothing to do with the Fable franchise. This has now been confirmed by Lionhead's John Needham in an interview with Eurogamer, and there's not only one non-Fable title in the works, but several.
"We're working on other different sorts of games as well that we're not talking about right now and won't be Fable-esque."
The most recent non-Fable product released by Lionhead was the expansion The Movies: Stunts & Effects - published in 2006.