Blizzard announced today that the Diablo 3 Closed Beta is now underway, which means all players are now eligible for beta testing. Of course, you need to be selected first, so make sure you have your Battle.net account settings configured properly for beta eligibility, and also be sure your system profile is current. See this post for additional info on being eligible for Diablo 3 Beta selection.
As with any hugely anticipated beta invitation mass-mailing, please be wary of phishing attempts. If you’re fortunate enough to receive a beta invite, please don’t click on any of the included links – no matter how legit the email looks. Always be safe and log into your actual Battle.net account to verify your beta participation status, as well as to download the game client.
Blizzard is not enforcing a Non-Disclosure Agreement with this beta test, so participants are free to discuss the game, post articles and reviews, publish videos to YouTube, etc…
Good luck to all those still awaiting an invite!