I imagine that they will shut down systems based on need. If an area isn't mission critical it could go at any time. Anything that's mission critical (in winding down the company) or has other legal issues should be around for a while. Frankly, I'm surprised the forums are still up. I expected they might go Facebook only, as a public communication.
We have to remember that these guys have ties to Steam, Cleverbridge, component providers and so on. I imagine Cakewalk could go Chapter 11, and then all sorts of other things will kick in. The wheels will turn for some time to come, it's just a question on how informed we will be. From my experience it could be slow and messy behind the scenes. So sad!