Blizzard sent out the following
Starting today, Overwatch will be free to play from Friday, July 26th through Monday, July 30th on PC! Interested participants can simply get the Blizzard Battle.net Desktop App, click on Overwatch and download the game with the touch of a button!
This is an unrestricted trial, so Overwatch’s full roster of 28 heroes—including the brand new Wrecking Ball—and 18 maps available for play in a variety of modes, including Quick Play, Custom Games, and the Arcade will all be available for free for the duration of the weekend! Players will also be able to level up, earn Loot Boxes, and unlock a variety of different customization options for their heroes.
Those who decide to buy Overwatch after jumping into the fray this weekend will also get to keep any progress made during the trial—just be sure to use the same Blizzard account that you played on.
Will you be giving this a try?
Source: Blizzard PR