As of 4 December 2016, Scribus 1.5.3svn provides a new text layout engine with support for OpenType advanced features, as well as complex and right-to-left scripts. For text features, a separate “Text Properties” palette has been created. Happy testing!
As of revision 21427, Scribus 1.5.3svn includes an import filter for Krita files (KRA). Happy testing!