If by "open," you mean shooting is allowed, then yes, it is open. I was out there in late November and it was the same old same old. If by "open," you mean drivable, I have no idea. Given the weather we've had in the Springs, I'd guess there's 6" of snow or more out there right now. I really have no idea though.
Take a 4wd and thermal socks. You'll be fine.