phpBB • Free and Open Source Forum Software

This GIT Repository that will have all the lang files From phpbb3.2.1 and upward for the Arabic Lang.
If you want to help pour into this bucket send me your username @ bitbucket

The Git Repository
https://bitbucket.org/phpbbarabic/phpbb

If you just need to download the files
https://bitbucket.org/phpbbarabic/phpbb/downloads/

I think this is the best way to update the files

Yes, there was an update for the lang files regarding
this
https://wiki.phpbb.com/Plural_Rules#Rule_.2312