Scribus 1.4 represents four years of development work and its developers handled more than 2000 feature changes and bugs.
Scribus 1.4 is also ported to using Qt4, with up until this point and being so long since the last release, this is improving the application framework code. The migration comes to Qt4 just a few months from Qt 5.0 being released. However, the Scribus team is keeping around the Qt3 support.
Scribus 1.4.0 also has feature enhancements to object handling, advanced options for text and typography, new features for vector objects, a "Render Frame" frame-type, vector import filters, and much more.
More details on Scribus 1.4.0 is available from this Wiki page.