I believe he has his PPL. He's talked about making a runway flight as he gains confidence with lifting the nose wheel.
There's a lot of engineering issues in this airplane. Just watch how the ailerons bounce up and down while he taxis with the stick completely centered. He's going to have flutter if he ever gets it fast enough to fly. He had a test pilot come check it out before they were to start the process. The pilot gave him a big list of issues that were a mandatory fix and then walked away when Peter wouldn't fix them. If you start looking into the details it's a pretty scary, although beautiful, airplane.