Halo: Primordium

Halo: Primordium is the second Halo novel in The Forerunner Saga by Greg Bear, as a sequel of Halo: Cryptum. It is set to be released on January 3, 2012 with a simultaneous audio edition.

Plot
"I’m having great fun working through the action and growing mysteries in Halo: Primordium, as humans engage in an epic odyssey across a damaged, war-torn Halo, facing the Flood, rogue AIs, and the stunning testament of the last Precursor..."

- Greg Bear