Beta test invites are being sent out, but if you’ve requested access to participate on the upcoming expansive paid service for the Call of Duty franchise, apparently you will have to complete another step before you get access to the beta test this summer.
Activision will contact you through the e-mail you provided when you registered showing interest to take part in the beta testing. You will receive an e-mail with a link that wants you to “complete your registration”. You will need to create your Call of Duty account and will have the chance to link it with your PlayStation Network, Xbox Live or Steam account. It’s like registering all over again. When you complete these steps, you will get another e-mail welcoming you to the beta.
More information at the official Call of Duty: Elite website.