It has been announced by Tor Books that a new Dragon Age book will be published called "The Masked Empire".
The book focuses on Empress Celene and the Orlesian Civil War. The novel will supposedly explore the relationship between the Empress and Grand Duke Gaspard, who now leads the rebel forces against the empress, as he begins to doubt her ability to find a diplomatic solution to problems with the mages and to deal with elven uprisings.
The novel is written by Patrick Weekes (who previously worked on Mass Effect, writing for such characters as Mordin Solus) and is slated for release in April 2014.