I might be missing something obvious but how might I get emails telling me there is new forum software?

I can’t seem to find anything here on the IPS site or in my own forum for this. Newsletter, email updates, etc.

Login to your ACP, click the bell icon (notifications) then click 'Notification settings' and toggle the 'Receive email notification?' option to 'Yes' for 'An Invision Community upgrade is available'

Aha! Totally overlooked that. Thank you. 😄

In addition if you want even more info on releases including what’s changed you can follow the Release Notes section to receive notices when new builds (including betas) are posted.

https://invisioncommunity.com/release-notes/