Greg Bear returns to the Halo universe with Primordium, out next week. But you don't have to wait until then to start delving into Bear's second installment in the Forerunner Saga. Tor.com has the first chapter of Primordium, and the second chapter is live over at Halo Waypoint.
Here's a snippet:
What am I, really?
A long time ago, I was a living, breathing human being. I went mad. I served my enemies. They became my only friends.
Since then, I've traveled back and forth across this galaxy, and out to the spaces between galaxies-a greater reach than any human before me.
You have asked me to tell you about that time. Since you are the true Reclaimers, I must obey. Are you recording? Good. Because my memory is failing rapidly. I doubt I'll be able to ﬁnish the story.
Once, on my birth-world, a world I knew as Erde-Tyrene, and which now is called Earth, my name was Chakas. . . .