Note that this is not the window manager (KDE SC 4.5.0), which is still to be released.
|KDE Applications 4.5.0|
"10th August, 2010. The KDE team today releases a new version of the KDE Applications. Many educational titles, tools, games and graphical utilities have seen further enhancement and usability improvements. Routing backed by OpenRouteService has made its entry in Marble, the virtual globe. Konqueror, KDE's webbrowser can now be configured to use WebKit with the KWebKit component available in the Extragear repository."
|KDE Plasma Workspaces 4.5.0|
"10th August, 2010. KDE today releases the Plasma Desktop and Plasma Netbook Workspaces 4.5.0. Plasma Desktop received many usability refinements. The Notification and Job handling workflows have been streamlined. The notification area has been cleaned up visually, and its input handling across applications is now made more consistent by the extended use of the Freedesktop.org notification protocol first introduced in Plasma's previous version."
|KDE Development Platform 4.5.0|
"10th August, 2010. KDE today releases the KDE Development Platform 4.5.0. This release brings many performance and stability improvements. The new KSharedDataCache is optimized for fast access to resources stored on disk, such as icons. The new KDE WebKit library provides integration with network settings, password-storage and many other features found in Konqueror."
Read more about it from the OFFICIAL ANNOUNCEMENT.