via wptavern.com => original post link
WordPress 5.9 is set to launch on January 25, and many users will be in for a surprise. The upcoming release will be the most monumental shift in how the platform works since the introduction of the block-based content editor in 5.0. Block themes, global styles, and the site editor will kick-start a new future for WordPress.
For the average WP Tavern reader, this is not news. We have covered block themes here for over a year. For those out of the loop, there is a lot to catch up on within the next two weeks.
One of the complaints with the launch of the block editor in 2018 was that users could only opt-out of using it by installing Classic Editor or a related plugin. This is not the case for the new features in 5.9. Users can keep on using their current setup without any changes at all. Accessing the site editor and global styles is an opt-in process. It requires the activation of a block theme.