Ubisoft seem pretty set on a two-year turnaround for Assassin's Creed going forward. The company's CEO said that development would continue to focus on Assassin's Creed Origins during 2018, making it unlikely we'll get a new game this year.
You're stuck with it for a while yet, so here's our Assassin's Creed Origins review.
Rumours that Ubisoft would abandon the annual release schedule for the freerunning franchise began at the beginning of 2016. Sure enough, we had to wait two years after the release of 2015's syndicate for the release of Origins back in October. In February 2016, Ubisoft CEO Yves Guillemot said that "the goal is not to automatically come back to an annual cycle."
That's clearly been upheld; in an earnings call yesterday, Guillemot said that Ubisoft would be focusing on ongoing for Origins, and that the team would be launching a few more DLCs during the year. While not explicitly stating that there would be no new game this year, the focus on their most recent game is a pretty clear indication that we won't be seeing any new assassins this year.
The Assassin's Creed Origins DLCs will include the Discovery Tour, which comes out next week, and The Curse of the Pharaohs, which releases on March 6. Ubisoft recently announced that they would be next Assassin's Creed game – which might have a Viking setting.