... Unless you meant wheels for non-Intel platforms, in which case, please do say more about you need.
Minor tangent: I've seen some people use https://www.piwheels.org/
for Raspberry Pi (ARM 6/7), but could the ARM binaries be uploaded to PyPI?
I think I'm conflating the wheel building spec (is manylinux amd64 specific, or as long as the libraries are on any architecture?), toolchains, environment (sounds like Piwheels provides a platform to build them on), and package hosting (can PyPI host arbitrary archs?) in that one sentence.
And there are even more layers to this problem. Wheels on piwheels are currently maintained by RPi folks; if they are going into PyPI, either package maintainers need to take over uploading (and even building) them, or PyPI needs a way to allow (qualified) people to upload stuffs for packages they don’t own. And maintainers might decide that ARM is not their supported platform anyway, and get us back to where we started.