basically, instead of nerfing picto they buffed everything else. The biggest changes are:

VPR: removed their boss side debuff that causes more 10% damage, and baked extra potency into the regular abilities (sorta like leaden fist / monk stuff).

BLM: Buffs via enochian, f4, despair and some aoe stuff, re-addition of ice paradox, and a QOL change to Umbral Soul that pauses the eno timer indefinitely after you press it.

SAM: Basically got a mini rework, tsubame is no longer tied to a Meikyo or Tsubame-gaeshi timer, you literally just hit Kaeshi Setsugekka after every single midare. This screws with the loop, you have to do 1 more gcd per minute which means no filler at 2.14/2.15. Ad hoc play unaffected. This also single handedly makes speed samurai viable as this is a pretty massive buff to the basic 10 (previously 9) gcd loop of building up 3 sen and doing your double midare.