Welcome here!
If you’ve looked around this site after you posted your message, you might have already found the answers to your questions. But I’ll briefly answer anyway, in case you didn’t.
Jane Jensen has been writing novels and continued working on developing computer games. Visit her website at http://www.janejensen.com.
It’s unlikely that Ken and/or Roberta would bring a game project to another company. Ken has stated that he and/or Roberta might be interested in doing another computer game one day, but that “one day” is not right now 🙂 I can’t picture Ken and/or Roberta at another company such as Blizzard. I mean, we’re talking about the former CEO and lead designer of Sierra here. If they ever were to start a new computer game project, they certainly wouldn’t have to “re-employ” to a company in the industry to make something happen.