The sale of loot boxes in Overwatch will stop immediately after the end of the event Anniversary Remix Vol. 3. This will happen on the eve of the release of Overwatch 2.
Recall that Blizzard decided to completely abandon the loot boxes in the second part of the game. Battle passes will appear in the sequel instead. On the day of the release of Overwatch 2, which is scheduled for October 4, all the loot boxes accumulated by gamers will automatically open.