A variety of changes and additions are coming to WordPress 5.1 — developers take note:
- New “short circuit filters” for
WP_User_Queryandcount_users(). There’s alsoLIKEsupport for meta keys. - Some developer-focused changes to the Cron API, including new functions and filters that will make “writing a custom storage system for cron events […] substantially easier.”
Jonathan Desrosiers has a good summary of other changes coming in 5.1, which include the ability to set a file path value for WP_DEBUG_LOG.
There have been updates to Gutenberg as well. Version 4.9 brings improvements in performance and documentation, plus a whole range of bug fixes, accessibility updates, and enhancements.
