Julia, that is likely as far as it will go. Even with the popularity of iOS devices, and increasing presence of Macs, the amount of resources needed to code for an entirely different platform greatly outweighs what return would result for CDE.
I do use a MacBook Pro that I purchased in late 2013 (right after they released the Haswell processors) and it is still running great, and I have Windows 7 running under VMWare Fusion 8.5.10. Those are not the highest level application and OS, but it's served me well for the better part of six seasons. Win7 loses support mid-season next year.
You mention a Windows emulator; you may already know that Boot Camp can create a partition on a Mac hard drive to have Windows or a host of other operating systems running natively. I originally did this when I first ventured into that...wow, I don't remember how many Macs or years ago.
TeamCDE Volunteer
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Always check, download, and install the most recent update of your software to ensure that issues may have been corrected.