KDE 4.5.4 has been released as part of monthly maintenance update before they will ship 4.6 release next January. As a maintenance update, 4.5.4 only brings translations update and also bug fixes, while leaving new features for the next 4.6 release.
This package has been included in Slackware-Current as of today as part of batch update. All other dependencies has been upgraded as well, but i was hoping that it would use Qt 4.7.1 instead of using svn version.
Most of Slackware mirrors will have their repositories updated by now. If not, please wait for next day.