Variable Fonts implementation

Client requesting an opsz font for use with iPhone. Where is Glyphs 2.4.2 [1015] with correct implementation of VF?

Would it be better to ship them something using “size” feature for the moment?

I added that if you put Optical Size in one of the masters ‘Custom’ name file, it would use the correct axis tag for the third axis. This will be available in version 2.4.2-1016.