LibreOffice 3.5 was released over the week with an extensive list of changes.
The LibreOffice PPA is still only carrying RC1 at this time though so Ubuntu users wanting to give it a go will need to wait a while more.
Changes include improvements to UI, font hinting, grammar checker, filters and lots of others. PostgreSQL gets a native driver in the office suite. Check out the release notes for the complete list of changes.