Read the tread..he already stated that he will not make speculation on arrival or sale of a gun until it is already in stock. This is a proper answer. On top of it, there is probably very little market for those since there is non restricted .45 ACP available.
You have your answers : Marstar (and nobody else by the way, have any .45 ACP bolt rifle. What else do you need for an answer ?
If you want it bad enough, as other have stated, the Kriss Carbine is great, the JR carbine is also available.