Future version of OSX will be accommodated as they are announced.
If there are new features developed that work only on Later OSX's then we will let you know in the release notes. In the meantime iFamily for Mac will continue to be compatible with Older Versions of OSX for as long as possible, but new releases will be restircted to macOS at some point soon...
iFamily has been built to take maximum advantage of whichever OSX or macOS you are running and all versions do run substantially faster on the newer operating system forward due to enhancements made by Apple.
