We have enabled the Classic editor by default for all sites. If you would like to use the Block Editor (Gutenberg) on your site, go to “Settings > Allow users to switch editors”
From the WordPress 4.9.7 release post, WordPress versions 4.9.6 and earlier are affected by one security issue. As part of the core team’s ongoing commitment to security hardening, the following security and maintenance fixes have been implemented:
WordPress versions 4.9.6 and earlier are affected by a file deletion issue where a user with the capability to edit and delete media files could potentially manipulate media metadata to attempt to delete files outside the uploads directory.
Taxonomy: Improve cache handling for term queries.
Posts, Post Types: Clear post password cookie when logging out.
Widgets: Allow basic HTML tags in sidebar descriptions on Widgets admin screen.
Community Events Dashboard: Always show the nearest WordCamp if one is coming up, even if there are multiple Meetups happening first.
Privacy: Make sure default privacy policy content does not cause a fatal error when flushing rewrite rules outside of the admin context.
This maintenance release includes 37 enhancements, 51 bug fixes, and 2 tasks. The European Union’s General Data Protection Regulation (GDPR) related changes include Comments, Privacy Policy Page, and Data Handling.
This maintenance release fixes 28 bugs in 4.9, including fixes for Customizer, media library, error notices, and some security fixes. Twenty Seventeen bundled theme and Hello Dolly bundled plugin have also been updated.
This maintenance release fixes a severe bug in 4.9.3, which will cause sites that support automatic background updates to fail to update automatically, and will require action from you (or your host) for it to be updated to 4.9.4.
This morning we updated WordPress to 4.9. Highlights include “…an improved Customizer workflow with design drafts, locking, scheduling, and preview links. What’s more, code syntax highlighting and error checking will make for a clean and smooth site building experience. Finally, if all that wasn’t pretty great, we’ve got a great new Gallery widget and improvements to theme browsing and switching.”