The Document Foundation has released their last release for LibreOffice 3.6.x branch. They will focus on fixing bugs on LibreOffice 4.0.x and probably working for future release of LibreOffice 4.1.x.
This is an unplanned release as LibreOffice 3.6.5 was supposed to be the last maintenance release for 3.6.x branch, but then it was decided to have another release and this is it. It brings over 50 bug fixes since LibreOffice 3.6.5.
Users who prefer stability to more advanced features should stick with this release and for those who are willing to test new features should go with LibreOffice 4.0.2 which was released last week.
You can download it from their Download page, but you will have to switch the version to 3.6 since 4.0.x is the default option picked.