Overwatch, like most shooters, is in constant flux. What might be meta now could change in a matter of weeks or even days, and the current PTR (public test region/realm) is looking to shake things up once again.
Blizzard has announced that Hanzo is losing his scatter arrow ability, and will now utilize storm arrows, a succession volley attack of six shots -- as well as a new mid-air jump called lunge. In other news Genji's deflect hitbox has been reduced, Brigitte's shield bash has been tweaked to have a smaller cone angle (60 from 90), Junkrat's frag launcher has had its projectile size decreased slightly (and his Rip-Tire is a tad slower), Lucio's wall ride has been altered, and Tracer's pulse bomb now has a max damage of 300 instead of 400, because it was "too good at killing tanks."
You can also try a new map in PTR, an escort joint called Rialto, based in Italy. If you're a regular player and want to see the exact figures for everything you can find them at the link below.
Overwatch PTR Patch Notes [Battle.net]
via destructoid https://www.destructoid.com/big-overwatch-ptr-changes-gut-hanzo-s-scatter-arrow-ability-tweak-genji-tracer-and-more-500014.phtml