The features of blogging with the latest version of WordPress (5.7) include:

A new default theme called "Twenty Twenty-One"
Full Site Editing, which allows users to edit their entire website using a block-based interface
New block patterns for headers, footers, and more
Lazy-loading images for better performance
Improved accessibility features
Additional color options for the block editor
The ability to schedule automatic updates for plugins and themes
Improved navigation in the block editor with a new Block Navigation sidebar
New APIs for developers, including the optional feature of using JavaScript for rendering the front-end of a website
Improved performance with faster page loads and more efficient use of server resources.
Please keep in mind that this is a general list and it might not be inclusive of all features and improvements.