Double Helix has something else going on besides Strider
Let's unravel this polymer of nucleic acids and LinkedIn resumes. First, concept artist James Paick showed off some sci-fi art from "Unannounced IP" linked to Double Helix.
Some NeoGAF snooping uncovered a LinkedIn page for Double Helix visual effects artist Allen Will. On it, there's an "Unannounced FPS Project" for 360, PS3, and PC. A 2011 promotion to Senior VFX Artist brings with it the addition of, "Unnanounced Action Shooter" for "Next Gen, PC," along with the Strider reboot.
It's possible that that first-person shooter was transitioned into the next gen action shooter. It's also possible that it's vaporware. At least some concept artists got paid for some cool sci-fi works.