The Manjaro team announced release of Manjaro KDE-Next 2015.08, which is a pre release before Manjaro's migration to KDE Plasma 5.x framework. This release is a kind of preview release which exhibits features that can be expected from upcoming Manjaro KDE releases.
From Release Announcement:
With this release we have focused our efforts, bringing you a preview of our upcoming KDE edition featuring Plasma 5.4.Plasma brings many nice touches for our users such as much improved high DPI support, KRunner auto-completion and many new beautiful icons. It also lays the ground for the future with a tech preview of Wayland session available. We’re shipping a few new components such as an Audio Volume Plasma Widget, monitor calibration tool and the User Manager tool comes out beta.