Instead the game will be available via either Uplay or Epic Games Store. This is the third Ubisoft game to receive the no-Steam treatment, with the first two being The Division 2 and Anno 1800. As much as it may suck, this move only makes sense for the publisher; Steam takes a hefty cut from the sales’ pie, and publishing on their own platform as well as Epic Games Store will cost them much, much less.
Oh well. GR: Breakpoint will come out on October 4th. The game will soon enter early beta tests phase. Its trailer can be watched here.