Well, WordPress has dumbfounded me yet again… I do not know for how much longer I can deal with the WordProcess…

Version 4.3.1 never made it live because I accidentally forgot to delete two Git files from the repo before I uploaded the Zip.

So, after deleting them and re-uploading (necessitating the version increment), version 4.3.2 has now been listed as the “Current Version” since late last week, but is still neither the version that the Download button links to, nor is it being pushed to users via the Update system.

For anyone that is tired of waiting for the latest updates, you can download a Zip of version 4.3.2 here:
http://wordpress.org/themes/download/boilerplate.4.3.2.zip