As of May 2020, there are no plans for further development of free updates to the Linux and macOS builds.
This is due to my limited available time/resources and essentially zero sales on those platforms. After over 3 years, I've made the difficult decision to focus on only supporting the version that the majority of customers are using.
Development is continuing and v4.5 will be released for Windows, for free, when it's ready.
For existing customers - the most recent builds for macOS and Linux are available here:
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