As the title says, SDL Tridion Sites 9.1 is now released (the official release date was the 29th of August). The official documentation for the new version can be found here.
The release, besides various small improvements, contains two new functionalities/features, both of which I've already covered with blog posts. Just a disclaimer, since that the blogs were written based on technical webinars held by SDL some time ago, there might be some differences in the actual release. The majority of information, if not all, should still be valid though.
You can refresh your memory by clicking the links below:
For a complete list of changes, I recommend consulting the official documentation: Changes introduced in SDL Tridion Sites 9.1