The current console generation is going full steam ahead, and with the PlayStation 4 Pro now in stores, the Switch performing well on the market and the Xbox One X on the horizon, one cannot think that the current generation is nearing its end - but it may very well be.
Recently, NeoGAF user Nirolak managed to dig up a couple of job listings by Just Cause developer Avalanche Studios, and they all reference development for current as well as "next gen" platforms.
This is likely partly in reference to the upcoming Xbox One X, but it also does seem like development for the next generation of consoles has begun by development teams.