A new version of WordPress (version 4.8) should be out on June 8, 2017 or around that time, according to WordPress:
WordPress 4.8 Release Candidate (wordpress.org)
The release candidate for WordPress 4.8 is now available.
[Release Candidate] means we think we’re done, but with millions of users and thousands of plugins and themes, it’s possible we’ve missed something. We hope to ship WordPress 4.8 on Thursday, June 8...
This release should just be a features upgrade but when it's released, we'll find out if there are any security fixes with it.