Open Beta to come before the May 24th Launch

[Ari]

The next open Beta wave inc:

As a newly added bonus, if you pre-purchase or preorder Overwatch for any platform at www.buyoverwatch.com, you'll also get early access to the Open Beta for you and a friend from May 3–4. After that, everyone will have a chance to play free during an all-access Open Beta period from May 5–9.

Source:

http://us.battle.net/overwatch/en/blog/20055970/