Even though Assassin's Creed Unity was a tad disappointing (and broken), don't expect the series to slow down. Kotaku reports next year's game, set in Victorian London, will be called Assassin's Creed Victory.
The publication watched a lengthy target video for Assassin's Creed Victory, apparently in development at Ubisoft Quebec.
If you want some hope for Assassin's Creed Victory, consider this. Ubisoft Quebec developed the rather remarkable Freedom Cry add-on for Assassin's Creed IV: Black Flag. Freedom Cry tried some interesting ideas within the existing Assassin's Creed structure. If the same team was given more time and resources, maybe they can clean things up?
It's possible, sure. But at this moment, I couldn't be less interested in a new Assassin's Creed game.