Important architectural updates were made in this release:
Automatic Update: Now WordPress will perform updates in the background, without requiring your participation. In addition, the update process itself is made more secure and reliable.
Improved password creation tips. Your password is the first line of defense in the event of a hacker attack, so the developers have introduced a more stringent password check. Now WordPress will notify you of a low security level if the site password contains dates, names, part of the alphabet or keyboard layouts (“abcdefg”, “qwerty ') and similar things.
Improved localization support. Wordpress will track and install all the updates related to the localization of the blog. This is done primarily to support non-English-language blogs.
Also, you are waiting for more than 400 closed tasks in Trac , a lot of opportunities to manage automatic updates, support for more complex date query and other features, which you can learn more about in the code . The next version of Wordpress will be released in December.