The second KDE 4 developers snapshot is now available. This 3.80.2 release includes source from all the KDE modules. Application developers are strongly advised to work primarily on KDE 4 from now on. This release builds with Qt 4.2.0 and 4.2.1 (but not the 4.2 preview). Packages are available for Kubuntu and currently working through the SUSE buildservice.
http://dot.kde.org/1162475911/