Go is not vulnerable in the same way software using webpki is, because it generally uses the system trust store. However, this change is about golang proactively blocking the certs, so that even if your OS doesn't update, it still won't trust them.
> actually it was one of the first stories about eMudhra appearing on the HN homepage yesterday.
I feel like I'm going crazy, something which happened (checks clock again to be sure) yesterday (actually two days ago I think, so much has happened that it all blurs together) is being considered old news!