Blizzard Europe invites european players to double-check their Battle.net Account's Beta Opt-in settings. Diablo III beta invites will be sent out en mass very soon, as well as giveaways and fansites giveaways.
German and French beta clients will be available at a later time. -- source
Brave heroes, the time has come to arise and answer the summons: the Diablo III beta is upon us here in Europe!
The first wave of invitations to the European Diablo III beta test is now being delivered. The client is available in English, with German and French becoming available at a later date. In addition to selecting players from those who have opted in via their Battle.net accounts, we’ll also be providing keys through beta promotions and giveaways. We welcome those invited to provide feedback on the official forums.
If you have a beta license, you are free to show, share, or talk about any portion of the beta content to which you have access, as this beta test is not confidential.
As always, we’d like to remind those hoping for an invite to be wary of phishing attempts. If you believe you’ve received an invite to the Diablo III beta test, it’s best to refrain from clicking on any links in the email, and instead log in to your Battle.net account to see if a Diablo III beta game account has indeed been granted. Or, if you were sent a key, you should attempt to add it manually by going to the Add or Upgrade a Game section of the Battle.net account management page.
For those who have received an invite to the beta test, we thank you for helping us test out our server stability and hardware. For those of you still hoping for an invite, we wish you the best of luck and hope you’ll keep an eye out for some of the beta-key giveaways and promotions we’ll have right here on the European Diablo III community site.
For more information, please see the beta opt-in announcement and FAQ.