Keep tabs on the updates that are planned and rolling out, by watching the roadmap. This long list of features can be filtered down to see the products you are interested in, and it even has its own RSS feed to follow.
https://www.microsoft.com/en-us/microsoft-365/roadmap?rtc=1&filters=
https://www.microsoft.com/en-us/microsoft-365/roadmap?rtc=1&filters=&searchterms=sharepoint
