I own all of the commentaries that have been released, and some that have not yet been released. What puzzles me is that in reviewing the published volumes, the publication dates are from 2012 to 2017. It would seem that Lexham has not released a new volume in 5 years. So why are they selling unreleased volumes when they are not releasing new volumes? I could see having them available as preorders, allowing someone to order them and not pay until it ships; but I already own volumes I have paid for that haven't been released, and they are still selling more unreleased volumes.