There's a recent interview on YouTube where Potts and Perry say they are still waiting to hear.
Not sure we'll watch this show. The humor in the previous two shows came from the fact that Sheldon was such a fish out of water. Without that element, the show will probably lose most of its appeal.
Suspect that while Lorre knows how to write a show, he's not that good at coming up with an idea for one. The ideas for Two & a Half Men, The Big Bang Theory and Young Sheldon all came from someone else.