That's actually expected. They're committed to getting movie made just to tie up the trilogy and probably because they're in too deep but any hope for a good box office died with Dylan's accident. With tumors of one of the female leads being pregnant (Kaya) and Rosa getting that role, there just wasn't any other place for it. I don't think anyone expects much from it.
To answet the last question, no one really knows and given how fanatical he is about his privacy, probably no one will ever know. He was pretty much cast for the American Assassins movie that should start production soon so that's a good sign.