I have not tested the new OS. I am glad for new things, but I wish for real content - a new dungeon, a new region. I play perhaps differently, I like to explore, to admire the art work, to see what awaits around the corner. Onslaught is fine for a brief hack and slash approach, but I would love to have something else.
Even adding shards to existing dungeons would perhaps increase interest in doing them again.