https://playoverwatch.c
The Overwatch Free Weekend will run from September 22–25. PlayStation 4 owners with a PlayStation Plus membership, Xbox One owners with an Xbox Live Gold membership, and Windows PC users with a Battle.net account will be able to download and play Overwatch for FREE during this period—no special keys or sign-up codes needed!
The free period will begin on September 22 at 11am PT and end on September 25 at 11:59pm PT in all participating regions across all platforms.