The new office 365 business center includes email marketing
The new office 365 business center includes "email marketing" mailing list includes the option for a sign-up page. On the banner of the sign-up page the text "sign up for updates and promotions" Admins should be allowed to change the text for the signup page.
We’re working on this item. You’ll be able to change the “sign up for updates and promotions” text.