It's hard to believe LibreOffice has only been around about two years, so thoroughly has it come to dominate as the leading free and open source productivity suite, but late last week a release candidate for its next major version appeared.

Last month the foundation held a “test marathon” for the software, followed soon afterwards by the appearance of a second beta release. After two more release candidates in the coming weeks, LibreOffice 4.0 is due to arrive in its final form next month.

In the meantime, there's nothing like a release candidate for offering a sneak preview. Ready for a quick peek? Here are a few key features we can expect.

1. Support for Firefox themes

Firefox fans will notice a new level of integration between LibreOffice and their favorite browser. Specifically, in this upcoming version of LibreOffice, you'll be able to choose “Tools,” “Options,” “Personalization,” and then “Select Persona.”

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