When a new release note is published it will be presented to you when you log on to feed, but if you want to look at it later on, you will find the menu for that under Settings - Documentation - Release notes.
This will also give you access to all historical release notes and the updates and bugfixes for each version of feed.
Or you can click here: https://www.isys.no/feed-forum?p=releasenotes-835687