I thought this might be of interest...
http://blog.documentfoundation.org/2013/02/07/the-document-foundation-announces-libreoffice-4-0/
[...]
Improved code contribution thanks to Gerrit: a web based code review
system, facilitating the task for projects using Git version control
system (although this is not specific of LibreOffice 4.0, it has entered
the production stage just before the 4.0 branch)
[...].
Cheers,
Gavin