Who are you to make such a demand with the expectation of getting a response? This is a peer to peer forum. If you want an answer the better route might be to send a PM to Noel.
It should be obvious that the alpha version is not ready. Explaining why might be crossing the line of business confidentiality that Cakewalk doesn't want to do at this time. If they weren't going to go ahead with it they would have made an announcement about that for sure.
Cakewalk made it clear when they made the announcement that the Mac market was huge so I doubt they're just going to throw that potential out without giving it their best shot.
It will be ready when it's ready. Cakewalk is a company that makes and sells software but I don't think we are owed any explanation.