Ubisoft is now in a difficult situation: continuing the series themselves after so many failures would simply be foolish, but leaving it to gather dust as a dead weight is not rational, as they invested a huge amount of money in the project.
Most likely, we will see a new global reboot of the series, similar to what the fifth installment was. Under the wing of a new company, and in a new world. And in my opinion, this is actually good news, as Ashan has become stale and is not developing, and it's getting repetitive - it needs fresh blood. Currently, there are discussions about what the continuation of the series should be like.