Happy New Year everyone! :^)
To start off 2014, we have put together packages for all the languages that received the most contributions on Transifex (the collaborative translation platform we use for b2evolution).
Here are all the languages we have packaged so far for b2evolution v5:
language packs download page.
You are welcome to contribute a few strings on Transifex or even start a new translation for your own language.
PS: b2evolution 5.0.7-stable and 5.1.0-beta coming soon (we're still fixing some bugs... ;)