https://www.gamespot.com/articles/overwatch-halloween-update-patch-notes-includes-to/1100-6462421/

Overwatch has kicked off its Halloween Terror 2018 event, and the patch that adds the holiday festivities includes a lot more besides that alone. The full patch notes show changes made to Torbjorn, color blind options, and a lot more.

Halloween Terror 2018 is the headliner of the update, but it also includes the major update for Torbjorn that was announced last month. Torb no longer uses armor packs or the scrap system. His secondary ability instead has changed to "Overload," which works a lot like his previous Ultimate ability. The new Ultimate, called Molten Core, will shoot out pools of magma. Plus his turret build levels have been scrapped entirely, now permanently set to the second level.