Battle.net says to expect another beta weekend for Overwatch starting on Friday, saying they will open this up to a larger number of players for a 36 hour period. This continues to be an invitation-only affair, and they say they will begin flagging additional accounts for inclusion starting tomorrow afternoon so that invitees can preload the client. Here's more on what testing of the teamplay shooter will involve at this time:

During the Beta Test Weekend, all players (including those currently in the Closed Beta) will have access to the full roster of 21 heroes and a limited selection of maps: Hanamura, Route 66, and Nepal. Certain features will also be unavailable during this Beta Test Weekend including Weekly Brawl! and Competitive Play.

Since this is a stress test, we're primarily interested in your technical feedback, like how Overwatch runs on your system, your experience with the beta servers, critical bug reports, and other game-impacting problems. One of our goals is to push our hardware to the limit, so don't be surprised if you experience performance issues or run into unexpected downtime—that's all part of the process.