KDE has released the Release Candidate of the 4.14 versions of Applications
and Development Platform. With API, dependency and feature freezes in place,
the focus is now on fixing bugs and further polishing.

A more detailed list of the improvements and changes will be available for the
final release in the middle of August.

With the large number of changes, the 4.14 releases need a thorough testing in
order to maintain and improve the quality and user experience. Actual users
are critical to maintaining high KDE quality, because developers simply cannot
test every possible configuration. We're counting on you to help [1] find bugs
early so they can be squashed before the final release. Please consider
joining the 4.14 team by installing the release candidate and reporting any
bugs [2].

The official announcement [3] has information about how to install this
Release Candidate.

[1] http://dot.kde.org/2014/03/12/applications-413-coming-soon-help-us-test
[2] https://bugs.kde.org/
[3] http://kde.org/announcements/announce-4.14-rc.php