Is this a scam?

Always when you get an e-mail that seems suspicious legitimate or not. It's best to open the internal headers of the e-mail to find out the place it actually originated from.

As such you can read this on how to identify fake e-mails by reading the headers:

How to Identify a Phishing Email
http://us.blizzard.com/support/article/30828

List of official Blizzard Entertainment domains (at bottom)
http://us.battle.net/security/checklist.html

Excellent advice. In any event, you should become familiar with the process of checking the full and complete headers. It's the most reliable method of determining the legitimacy of ANY e-mail, and the resources provided above can detail the process for you if you are unfamiliar with it.

Just to reiterate - yes, this is a valid offer being distributed to long-time players. Ultimately, it's always best not to click any links and navigate to Battle.net on your own to investigate.

Always when you get an e-mail that seems suspicious legitimate or not. It's best to open the internal headers of the e-mail to find out the place it actually originated from.

As such you can read this on how to identify fake e-mails by reading the headers:

How to Identify a Phishing Email
http://us.blizzard.com/support/article/30828

List of official Blizzard Entertainment domains (at bottom)
http://us.battle.net/security/checklist.html

Excellent advice. In any event, you should become familiar with the process of checking the full and complete headers. It's the most reliable method of determining the legitimacy of ANY e-mail, and the resources provided above can detail the process for you if you are unfamiliar with it.

Just to reiterate - yes, this is a valid offer being distributed to long-time players. Ultimately, it's always best not to click any links and navigate to Battle.net on your own to investigate.