Current version?

I have CMotion 2.1 is this the current version? And if I need to download a newer version do I unstall the current version first?
Thanks

Current version is listed at: http://carbide3d.com/downloads/

Per http://carbide3d.com/blog/2017/feb-2017-update/ there should be a new version presently.

I don’t bother to uninstall, though I do recommend it when there are software problems.