https://www.pcgamer.com/overwatch-halloween-horror-event-is-live-torbjorn-rework-is-complete/

The Overwatch Halloween Terror event is live, bringing with it the return of the Junkenstein's Revenge PvE brawl, a bunch of new seasonal skins, and an opportunity to pick up some "spooky gear from previous years" that you may have missed the last time around. 

The Halloween Terror kickoff also marks the rollout of the latest patch, which completes the rework of Torbjörn that was detailed last month. "Torbjörn was initially designed to be a specialized hero, intended to be a strong defensive option due to his armor-generating capabilities and ability to control areas with his turret. However, the scrap collecting and Armor Pack mechanics have proven to cause problematic gameplay issues because of their feast or famine nature," Blizzard explained.