Current-gen Ryzen APU's (2200g/2400g) are based on Gen 1 Ryzen architecture.
Is it safe to say next-gen Ryzen APU's (3000 series) will be based on Gen 2 Ryzen architecture? That would make this announcement unsurprising.
Raven Ridge (2200G, 2400G, etc) is what I'd call Zen 1.1 - not quite Zen+, but it has some enhancements over the original Zen cores found in the 1000 series. The 3000 series APUs are NOT Zen 2, however. As near as I can tell they're still Zen 1.1, it's a direct port kind of dieshrink to 12nm. Runs cooler, slightly higher frequencies, and overclocks a bit better (though that last part is partially due to switching these APUs to solder for the heatspreader). The Zen 2 APUs will come after the CPUs, much like the initial Ryzen rollout.