Taking into account the PTR patchnotes:
Ana:
Anti-Heal reduced to 50%
Duration increased by 2 seconds on Biotic Grenade.
Ashe:
BOB no longer can contest the objective.
Brigitte:
Repair Pack now triggers Inspire for 3 seconds.
Dva:
Matrix recharge time reduced by 15%
50 Armour converted to HP.
Doomfist:
Keep his ultimate change.
Keep the uppercut nerf.
Revert everything else.
Genji:
No longer gets passive movement speed increase.
No longer gets increased movement speed during Dragonblade.
The window for Swift Strike to reset on a kill or assist has been reduced to 3 seconds since Genji last damaged them.
Hanzo:
Projectile Speed reduced by 10m/s.
(Applies Widowmaker as well) targets now know when they’re being tracked by Sonic Arrow. (Same effect as Sombra’s DETECTED).
Lunge Cooldown increased by 2 seconds.
Junkrat:
Grenade projectile nerf reverted.
RIP Tire damage now falls off harder outside the initial radius.
Mei
When targets are now 50% frozen, they are locked out from using mobility abilities.
Cryofreeze now reloads her weapon.
Mercy:
Valkyrie Chain beams reduced to 50 HPS.
Valkyrie Primary beam increased to 90 HPS.
Moira:
Can now heal through barriers (again).
Orisa:
Armour increased by 100.
Fortify CD reduced by 1 second.
Reaper:
Death Blossom now pierces Deflect and Matrix. It can still be blocked with shields.
Soldier:
Damage increased to 20 per shot.
Biotic Station cooldown reduced by 2 seconds.
Sombra:
Targets hacked now have a Sugar Skull above their head.
Hack is now instant and cannot be interrupted, but only lasts 2 seconds. (EMP still lasts 6)
Symmetra
Tick-rate on primary fire increased.
Teleportation setup increased.
Enemies who walk through her wall now have their speed reduced by 20% for 1.5 seconds.
Torbjorn:
Turret HP is now 200, but in armour.
Torbjorns HP is now 150 HP, 50 armour.
Critbox reduced by 10%.
Tracer:
Tracer now only recalls for 1.5 seconds. Now automatically reloads her pistol regardless of what her ammo was.
Fall-off is now 6-20 meters. Down from 11-30.
No longer gets passive movement speed.
Widowmaker:
Weapon charge up is now exponential. 50% to deal 150 damage. 80% to deal 200 damage and 100% to deal 300 damage.
Enemies now have a visual queue for when they are being tracked by infra-sight.
Winston:
Shield cooldown and duration increased by 2 seconds.
Zenyatta:
Discord now increases damage taken by 20%.
Orb of Destruction damage increased from 46 to 50. (Basically Zen’s damage is unchanged against discorded targets)
NEW SYSTEM:
Hero Ban.
Each Team now has the option to ban ONE Hero in competitive games.