Packages for the release of KDE's document suite Calligra 2.8.1 are available for Kubuntu 12.04 LTS and 13.10. You can get it from the Kubuntu Backports PPA (alongside KDE SC 4.13). They are also in our development release.
To update, use the Software Repository Guide to add the following repository to your software sources list:
Thanks to Scarlett for her help in making these packages.