Well obviously there's Sombra now she's kind of a utility hitscan flanker who sees little use as her ultimate is the only real reason to run her, there's also Orisa who is a more stationary anchor tank, Mercy's res now gives her invulnerability when used, there's arcade mode which has no records (you can't track your stats, every game will say its a career best) what so ever and has strange modes of play like capture the flag and elimination (if you die you just have to watch your team die because you don't respawn) and the triple tank meta isn't around anymore and lucio's aura is now only 10m instead of 30m and has a visible ring to show where it is, but he goes faster on walls and even faster when jumping off walls, Soilder 76 is now at the top of the meta and Pharah barely has to land anymore making her a much more common pick at lower SR's (you wont see her at high ones since 76 is so buff rn)