FWIW an "apt-get update" a few minutes ago still shows RC14 RC1 version of kipi-plugins-trinity (4:14.0.0-r194-0debian7.0.0+pr23) which still depends on libkcal2b-trinity. Most packages (e.g. kalarm-trinity) have been rebuilt and lost that dependency.
Packages still depending on libkcal2b-trinity are:
kpilot-trinity kbugbuster-trinity kipi-plugins-trinity
--Mike