I haven’t seen anything on the SJG side but Studio Folio has confirmed that GGG is well advanced:
https://www.kickstarter.com/projects.../posts/2628791
“Also, Girl Genius GURPS is becoming a reality! That’s Steve Jackson’s Generic Universal Role Playing System for those who might not know. We’ve looked over their manuscript and added a bunch of our own stuff, and now it’s almost ready to send back to SJG. We are very excited about it.”