To ease confusion and maybe reduce unnecessary emails to support, why not have an in-game noticeboard about crucial changes and known hotfixes? (just like hundreds of other online games)
Absolutely link to the full posts and release notes in the forums - but when something is a known issue that is likely to generate tons of emails, if people know that you know then they will probably relax a bit and just wait for the fix that is already being worked on.
I know I’ve sent a few of those emails in the past