Well Pathfinder 2 is about to land. They had a good run of 10 years. Old D&D tended to last over a decade in print and 3.X had active support for 19 years a D&D record although on paper Basic also lasted 19 years but was more like 17 with several reboots.
Getting sick of parts of 5E, can be mitigated by playing more vs DMing. I suspect in 5 years I'll be ready for 6E and are getting to the point I'll play something else on occasion but I think I'll be good for another 3 years at least.
So strangely, the game is more popular than it's ever been (so we're told), but there's a surprising lack of supplements, adventures, and quality content (or ways to find it, besides a stab in the dark on the DMs Guild.)