Installing 4.9 beta 1 with your distribution packages
There is a dedicated [kde-unstable] repository. This repo only contains KDE/Calligra beta releases (and their unstable deps); when the stable version is out, the packages are removed.
Installation steps are at:
Provides scm versions (ebuilds) for master/trunk & stable branch, betas and rc's in an extra repository (overlay). Detailed install instructions can be found here:
There is an unofficial kde-unstable/kde-testing and a kde-stable repo maintained by Rex Dieter - the place where the newest bits come for already released stuff. But Fedora Rawhide is always the first place for all builds.