A few months prior to the release of Eclipse, Meyer hosted an "Eclipse Prom" event at Arizona State University with the help of a local bookstore and ASU's English department. The tickets sold out in seven hours, resulting in Meyer holding a second prom on the same day for which tickets sold out within four hours. At the event, Meyer read the first chapter of Eclipse, which was released in the special edition of New Moon that same day. In addition, Meyer embarked on a 15-city tour to promote the book. She also released the first chapter on her website and posted a "quote of the day" from the novel on each of the 37 days leading up to its release.
Prior to the book's release, Meyer also made an appearance on Good Morning America.