Koffice2.1 is out, this new release comes after 6 months of the release of 2.0 version. The new 2.1 comes with many new features and improvements.
This release is a marked improvement of almost all parts of KOffice compared to 2.0. Version 2.0 was labeled a “platform release”, which was meant as a first preview of the framework and new UI paradigm. In version 2.1, most applications and components have improved significantly but should still only be used by early adopters and probably not as the primary worktool.
You can find more informations about the new version on this link