With speculation abound on what Ubisoft's E3 lineup would include, it's now safe to say that we know at least one game that's on the schedule: Far Cry 5.
The existence of this next title was announced in two different places. Many people from Ubisoft's quarterly financial earnings report have reported that the game was announced there. If you'd rather not just take their word for it, an Ubisoft Developer posted the banner above in the official Ubisoft Forums in a thread simply titled "Are you ready."
We won't know the specifics on this game until presumably E3 2017.
In other Ubisoft news, South Park: The Fractured But Whole is officially on schedule for this coming fiscal year, likely putting its release date in the first quarter of 2018.
The Fractured But Whole was originally scheduled for Q4 2016, only to be delayed to 2017 only to be delayed once more to this fiscal year (April 2017 to April 2018).