Rhino 5 did support. What about the newest Rhino WIP? It’s 4.5 .NET framework based?
Yes, the WIP uses .NET 4.5
I’d like to mention that Djordje was asking this because .Net 4.5 is only supported by Windows Vista SP2, 7 or 8.
Just to be clear, the current Serengeti build requires Windows 7 or above.
We are already using .NET 4.5 multithreading features and our file open/save dialogs are only supported on Vista and above. We are also only compiling as a 64 bit application and XP 64 was never really a well supported operating system.