There's only one set of new i90 gear and it's, by name, quite clearly the Ninja Myth-tier gear.

There is new glamour sets - crafters now can make i110 gear, I realised today. That said, it would indeed appear the drops from the new dungeons are entirely the former Myth gear.

On another note, looking over the preliminary notes again... it appears that there isn't Ninja-specific Soldiery gear?