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Is there any plan to port playonmac to iOS whether to run Windows 10 desktop only applications or MacOS desktop only applications? There’s software that is still to be ported to the iPad such as Blender, Unity, Zbrush, etc. While there are workarounds using apps like Astropad it would be great to have something like PlayOn that doesn’t require running the desktop version from a Mac.

I don't think PlayOnMac 4 will ever be released for iOS. However, there's a chance that it could happen for Phoenicis (https://github.com/PhoenicisOrg/POL-POM-5). BUT: It doesn't seem like Wine is running on iOS, so having Phoenicis running would be pretty useless.