Halo: Silentium, the last novel in Greg Bear's Forerunners trilogy, is to be delayed until March 2013, Tor Books announced.

The novelization, initially expected to release in January of next year, will launch alongside audio and e-book editions of the title.

Bear's Forerunner saga details the story of the Forerunners, an extinct race that ruled the galaxy thousands of years before the events of the Halo games.