Hello @,
this is really great news that Spacemouse support is going to be implemented. I have some older Spacemouse Classic, equipped with serial connector (9-pin). I installed Spacemouse X-Windows driver v4.65 at my Linux box (SuSE Leap42.3) It is still working but requires some special tricks:-) 3D-Cube is working, but when I enable Spacemouse support in PhotoScan, it doesn't work.
SpaceMouse Classic is no longer supported by 3DConnexion as far as I know but you find them at Ebay for some EUR, I got mine for 5 EUR. That's good for the low budget.
@Agisoft: will you stay restless until Spacemouse support is seamless working and even my old Spacemouse Classic? Would be a greatful feature.