They mentioned that they're going for quality over quantity, but they are still putting a lot more resources into mobile games than they used to...
I'm expecting next year a new dungeon for level 130 players, as well as the start of the fourth arc.
The last time "quality over quantity" phrase was used by KI, was during the MMO team merge. That's when Pirate101 stopped getting world updates....and the quality dropped severely on that side of the Spiral (because there was basically zero quantity).
"Quality" is a very subjective term. I doubt this means less bugs/issues for new world launches, but rather effort being put into new visuals (like graphic revamps or better character models). What it clearly means, is that players will have less worlds to visit, less overall storylines, less NPCs to meet, etc. It could also mean more quality towards their mobile department at the expense of their MMOs....which has been the trend since 2015, since the "golden years" of KI MMOs were prior to the introduction of their mobile department.