WordPress 5.4 “Adderley” Released
WordPress 5.4 “Adderley” was released to the public on March 31, 2020. Check WordPress 5.4 announcement blogpost for more information on this release.
For Version 5.4, the database version (db_version in wp_options) updated to 47018, and the Trac revision was 47541.
You can find the full list of tickets included in 5.4 on Trac.
The WordPress 5.4 Field Guide has pertinent, in-depth information on the major technical changes for this release.