LibreOffice has been steadily gaining steam with some major releases last year cementing it as the number one open source office suite. Looking ahead, the Document Foundation are working on version 4.0, the first LibreOffice to leave behind the 3.x numbering system inherited from OpenOffice.org. RC1 of LibreOffice 4.0 has just been released, and contains a long list of new features.
Writer now allows you to create comments for text ranges, import ink annotations from DOCX or RTF documents, and import/export native RTF mathematical expressions. Calc now allows showing the values of formulas that were saved in the files, and the entire suite has better Unity integration as well. The extensive list can be found in the release notes.
While of course there’s no proper release date for LibreOffice 4.0 just yet, a release candidate is a step in the direction towards it. You can get the RC1 from the LibreOffice download page, however remember it’s best not to use it to replace the currently stable release of LibreOffice.