From: Max Brazhnikov on
The FreeBSD KDE team is pleased to announce public call for testing Qt-4.6.0.
Ports can be downloaded from area51 repository:

svn co http://area51.pcbsd.org/trunk/area51/QT

and integrated into portstree using 'qtmerge' script from
http://area51.pcbsd.org/trunk/area51/Tools/scripts/

Alternatively you can use patch vs portstree:
http://people.freebsd.org/~makc/patches/qt460.patch.bz2

Knowing issues: devel/qt4-designer fails to build when previous version is
installed, so you have to deinstall qt4-designer before starting update
procedure.

Please send feedback to kde-freebsd(a)kde.org

Special thanks to Alberto Villa for his hard work on getting Qt-4.6.0 ports
into shape.

Max Brazhnikov, on behalf of the FreeBSD KDE team