KDE 4.9.5 represents the latest monthly point release in the KDE 4.9 series ahead of the KDE 4.10 desktop release next month.
KDE 4.9.5 has 36 reported bug-fixes along with various language translation updates. This monthly point release has noted improvements to the Dolphin file manager.
More details on KDE SC 4.9.5 can be found at KDE.org.
KDE 4.10 is tentatively planned for release on 6 February. Features of KDE 4.10 are talked about in Features Being Brewed For KDE 4.10 and KDE Ships 4.10 Beta: Better Performance, More QML.