Actually, i need to release it as soon as i can. To have a free mind when Alien : Colonial Marines comes out and especially, to be even more focused on Beyond The Red Line. I worked on two maps, which are not finished at all... and i need to find more time to tweak some stuffs about weapons and powers animations. I'll post some new pictures on the website this week.
About Xen, I mostly worked on the scenario, which is pretty finished actually. And the final part of the gameplay and gamedesign details.
So, again, don't worry, we're still here... waiting in the dark for that Gearbox game.