lv51-53 dungeons/trials will drop ilv 110 or 120 gear (the soldiery gear that will most likely not be obtainable anymore through tomestones when expansion reaches)
lv54-57 dungeons/trials will drop ilv 120 or 130 gear (maybe the poetics gear also won't be obtainable anymore with tomestones when expansion reaches)
lv58-60 dungeons/trials will drop ilv 130 or 140 gear

that's my guess, i dont see they doing new ilv105 or ilv115 gear.

craftable gear will be at least lv130, maybe some other set of 150 gear that needs "specialization"?