I had considered the dedicated computer at some point in the past but I'm not sure it's something I want to do - though I can see how it might be an interesting option for many folks. More and more I'm trying to streamline things, to keep 3rd party stuff to a minimum and such.
If I integrated a second computer, I'd probably prefer to give Logic Nodes (distributed processing) a try than to waste it to run two incompatible synths. Or I'd run MainStage on it as a host.
Maybe things would be different if it were a plug-in that's crucial to my workflow, like EZ/Superior Drummer, and if I knew that an update was in the work. But as much as I love Rapture and Dimension, I guess that I can and will have to replace them. Apparently, Cakewalk doesn't care much if I do. We're not talking about 6 months behind in their support of an OS - Lion was released 2 years ago.
As for SampleTank and the others, I guess we may meet again in a not so distant future...
My initial post was actually pretty pointless. I am not really looking for a temporary solution or a workaround; I'm annoyed and disappointed that Cakewalk doesn't simply support any newer OS, doesn't communicate their plan if they have any. That can only leave me guessing and as a result, I can't be too optimistic about Rapture and Dimension Pro.