Second Overwatch Anniversary event brings ranked deathmatch and new cosmetics

Overwatch will be turning two years old next week. To celebrate, Blizzard will be running the second anniversary event from May 22nd to June 11th. The event will be playable for free on PC, Xbox One and PS4.
The event was announced on the official Overwatch twitter account:
https://twitter.com/PlayOverwatch/status/996012676449951745
New Cosmetics
This year, Overwatch will be getting an assortment of cosmetics which include skins, sprays and dance emotes. There will be a total of 50 new cosmetic items which include eight new legendary skins and three new epic skins. Just like the previous anniversary event, past skins and cosmetic items will be available to purchase using credits during the event. Seasonal brawls from past events like Lucioball and Yeti Hunt will also make a return.
New Deathmatch Map
The anniversary update will add a competitive style Deathmatch game mode. This mode will feature a ranking system complete with competitive points, skill tiers, leaderboards and ranks. Petra, a new map exclusive to Deathmatch, will be added to the deathmatch map rotation.
Loot Boxes
The new cosmetics, as well as previous seasonal ones, can be unlocked by opening the new Anniversary loot boxes. During the event, logging in at least once will grant players a free Legendary Anniversary loot box which contains at least one legendary item. Furthermore, purchasing the 50 loot box bundle will give you a bonus Legendary Anniversary loot box.
Free Weekend
The second Overwatch anniversary event lines up with the free weekend which is scheduled to kick off next week. The free weekend will run from May 25th to May 28th and will not require Playstation Plus for PS4 players.
Overwatch Legendary Edition
Blizzard plans to launch a new version of Overwatch titled Legendary Edition, which will include fifteen legendary, epic and Origin skins and will be available to purchase starting May 22nd.