Buildbot used to build for macOs, Windows and Linux, but I can only see recent builds for macOS in buildbot and the snapshots folder.
Where have Windows and Linux builds gone?
They haven’t gone anywhere, it’s likely that the builders for Linux and Windows have failed for some reason. Paging @Robin to please investigate and fix.
Sure, but previously they all showed up in buildbot and one could look at the log output to determine what has failed and why. Now, there isn’t even any mention of the Windows or Linux builders.
Hopefully, someone can attend to it and get it back.
Still looks like there are no builds for Windows and Linux.
Isn’t anyone interested in these “niche” platforms? 
A couple of issues have been raised about this on GitHub:
I don’t think there is anything that can be done until @Robin has some free time to investigate the problem.
I see its a common problem.
This is an unofficial pre release to get the speedmeter bug fix:
wxPython-4.2.2a1-cp311-cp311-linux_aarch64.whl
Here are the wheels for normal Linux with Python >3.09
wxPython-4.2.2a1-cp311-cp311-linux_x86_64.whl
I am not an expert. i hope it works.