Is this legit?

Hello!

It's important to remember that, while Blizzard does often send e-mails altering you to various things we think you'll want to know -- such as "you're now in the Legion Beta!" -- there's no reason to click on anything in an e-mail like this one. If you're in the Beta, you can go to the Battle.net Desktop App and see for yourself that you are. You can go to Battle.net in your browser and log-in and browse to your Account Summary and see that it's in your games list.

Thanks for testing!