Important: The #phpBB 3.1.x branch is no more officially supported. Please note that the French language pack compatible with this branch is also not supported anymore. To be sure to have latest security and bugs fixes, new features, please upgrade your board to the phpBB 3.2.x branch. Plus, you will enjoy the latest (and improved!) French language pack. 😀
French language pack for #phpBB 3.2.2 is now available to download at https://www.phpbb.com/customise/db/translation/french/
American English language pack for #phpBB 3.1.11 and #phpBB 3.2.1 is now also available on https://www.phpbb.com/customise/db/translation/american_english/
#phpBB 3.1.11 and #phpBB 3.2.1 released! Good news, French language pack for both versions are already available to download on https://www.phpbb.com/customise/db/translation/french/
Concerning the #phpBB 3.1 branch, the French language pack will NOT includes the latest big improvements done in the French language pack for 3.2 and 3.3 branch. Indeed, the 3.1 branch is tagged End of Maintenance (EOM) since June 2017, so the French language pack will be updated to include latest changes (like new or deleted keys), but no language improvements at all, except critical ones.
Development version of the French language pack for #Flarum is up-to-date with the latest locales. The language pack will be released when the new beta version of Flarum will be available to the public. It includes many improvements, I can't wait to share them with you! See https://github.com/milescellar/flarum-ext-french/blob/master/CHANGELOG.md for more details.
I just updated the development version of the French language pack for #phpBB. I'm sure there are many improvements that you'll enjoy! It will be available in the next 3.2.1 stable release. See https://github.com/milescellar/phpbb-language-fr/blob/3.2.x/CHANGELOG.md for more details.