I posted some of this on the main SFV thread, but I added more details here. I like how all but the top 2 got off without significant nerfs.
S2.0 Top Tier
Guile
Lots of partial reverts. He was mid-high tier in S1 so he'll be at least that good.
Urien
Reverted health. c.MK on block reverted to -2. EX Headbutt much worse recovery after a whiff. EX Chariot on block from 0 to -2 and reduced pushback. Better j.LK. Floechart Urien untouched, V-Trigger untouched.
High Tier
Cammy
Got a NEW MOVE, an air throw. SRK buffs. EX Spike has bigger hitbox. I think they were trolling here by adding a bunch of buffs like they did at the start of Season 2 -- air throw and the EX Spike change are probably useless.
Laura -- L Bolt Charge and c.LK got tiny nerfs.
Balrog -- Health revert. Virtually unchanged.
Ibuki -- nothing! VesperArcade called it.
Necalli -- Reverted v-trigger Disc's Guidance advantage on block (all versions). Tiny.
Rashid -- s.LK a worse anti-air. Fair.
Mid Tier
Akuma -- SRK buffs, tiny health buff.
Chun -- Nothing
She needed a little more.
Dhalsim -- new move, df+MK, seems minor. the itty bitty throw range change was in the kolin patch.
Ken -- Thunder Kick reverted to unsafe on block. SRK buffs.
Zangief -- Three new moves! Lariat nerfed. Will need to be tested out.
Low Tier
Alex
Reverted to S1 stats on s.MP, s.MK, and EX Air Knee. Partial reverts on c.MP and L Elbow. Not enough since he wasn't that great in S1.
Nash
Dash, sHP, cMK, M Scythe partial reverts. EX Scythe reverted. One leg reattached, i.e. not enough.
Birdie
Lots of partial reverts. He was really good in S1. I don't know if he got enough here.
Ryu
s.MP hitbox reverted (hurtbox still worse). s.LK reverted. SRK buffs. Probably not enough to be a good character, but he's usable now.
Vega
Slightly better claw s.HP. Huge improvements on claw c.HP, now +3 or more on block and hit. Claw dive goes from 0 to +3 on block and does more damage, possibly to balance out the M SRK airborne attack invincibility. None of these were in S1. EX crimson terror minor buff.
Juri -- No more LP anti-air. Standard SRK buffs. RIP Juri.
Fang -- Partial revert buffs, mostly on move speed. Still bad.