"Not being able to tell anyone about these rather significant developments has almost been as bad as being largely unemployed and unable to continue our work on Skullgirls," an introductory letter on Lab Zero Games' site reads. "We have always strived to be as open and transparent as our business and legal obligations will allow, but we feared news of these events would discourage our fans more than our conspicuous silence would. Being able to finally fill everyone in on everything is a huge relief, and we hope you understand our reasons for keeping quiet until now."
We've reached out to Lab Zero for more details. In the meantime, the developer says the circumstances of the summer have delayed work on the PC version of Skullgirls and "indefinitely delayed" the first DLC character. They haven't given up, they're just busy trying to get back up.