I'll copy below the industry blurb I got on the change. They are currently selling both ships under the new name.
Azamara Cruises, a division of Celebrity cruises, is a deluxe line designed to offer exotic, destination-driven travel experiences. Azamara provides guests with a distinctive combination of impeccable service, exceptional cuisine and off-the-beaten-path destinations, with truly immersive excursions.
The intimate Azamara Journey and Azamara Quest, formerly the Celebrity Journey and Celebrity Quest, allow passage into remote ports that larger cruise ships are unable to reach, some of which have never before been visited by cruise ships. An onboard "excursion expert" will be available to help guests choose shore excursions personalized to their interests and educate passengers on the culture and history of each port. Butler service is on hand in every stateroom and suite, and guests can enjoy a daily fruit basket, fresh-cut flowers, flat-screen televisions and wireless internet. With an emphasis on luxury and relaxation, Azamara cruise ships provide private spa services available in each stateroom, as well as a variety of services accessible in the ship's spa, including microderm abrasion and acupuncture.
Azamara Cruises features destinations including Bermuda, the Caribbean, South America/Antarctica, the Panama Canal, Europe and Asia.