So I guess assaults are capped at 370 still?

[Rhielle-sentinels (Rhielle)]

That’s because it’s an assault piece and not an emissary piece.

@Watcher

All epic Azerite armor of item level 370 or higher, obtained from Battle of Dazar’alor, world quest emissaries, Season 2 dungeons, or Season 2 PvP, will have a fifth outer ring with additional spec-specific traits.

• This outer ring only requires a Heart level of 15 to access.