Yep, it is. He announced it in the latest Dogbert's New Ruling Class newsletter:

http://www.unitedmedia.com/comics/dilbert/dnrc/html/newsletter61.html

i don't care much, the fact is: it's funny as hell. Subscribed!

its also on dilbert.com atm

Yes, it's real. Notice the ads on the right. Click the "Buy a Link Here" link. It takes you to the Dilbert.com site.