For the interested ones, this (screenshot) did pop up today after a reboot.
Well I'm not on the beta and I got one, sat there waiting behind the scenes (not requiring a restart) until I closed other windows.
I think that this was a general Covid-19 Scam warning and not a notification of new features in a new update.
Yup got a splash screen but no update, Agreed David, it was definitely Covid-19 related.
