IDK if those equate to an MMO resurgence. WoW Forever is just milking an old cow, and Runeterra is vaporware, as is RS4. MMO talk is cheap. Shipping something original and not half-baked trash is rare.

I do think Riot is in a good position to develop an MMO though, and maybe GW3 will deliver something as well, but the genre is on life support IMHO.