Thanks to Naoko McCracken the WordPress Beta Tester plugin is now fully translatable and also has a Japanese translation out of the box.

WordPress Beta Tester with Japanese translation enabled
Hopefully this will make it easy for Japanese WordPress users to get involved in the Beta Testing of WordPress 2.9 in the coming weeks. If you would like to submit a translation for your language then you can download the pot file from the WordPress plugins Subversion repository here: wp-beta-tester.pot. If you send me the po and mo files I will add them to the repository and release an updated version of the plugin.
Peter, please find the german translation (de_DE) at http://talkpress.de/file_download/7/wp-beta-tester-de_de.po
Thank you Robert. That was really quick!
I have added those to the plugin subversion repo and will package a new version once I have a few more translations.
Hello,
This is Bosnian translation (bs_BA) for WP Beta Tester:
http://burninglegions5.bu.funpic.de/WordPress/WPBetaTester/bs_BA.mo
http://burninglegions5.bu.funpic.de/WordPress/WPBetaTester/bs_BA.po
Thank you Kenan.
I have added those to the plugin subversion repo and will package a new version once I have a few more translations.
Hello Peter,
the Italian translation is online!
http://gidibao.net/index.php/2009/11/15/wordpress-beta-tester-in-italiano/
Regards as always
Gianni
Hi,
Polish translation – here you are: http://www.poradnik-webmastera.com/wp-beta-tester-pl_PL.zip
Thank you Daniel.
I have added those to the plugin subversion repo and will package a new version with them included soon.
wow…that’s so cool.
I have waited along time for this thing…
Thank you everyone we have German, Bosnian, Italian, Polish and Romanian translations for the Beta plugin. http://bit.ly/wpbetatester
Peter, do you have any intentions to acknowledge the authors of the bundled translations?
Hi Robert – yes I do!
I am very grateful and I am going to do a post with a screenshot of each translation when I get a moment.
All of your work is very much appreciated!
I guess the little nations like Slovene are always left out
Or some enthusiasts will have to do it.
I believe someone did start a Slovene translation for WordPress a while back but I don’t think there is an up-to-date one at the moment unfortunately.
If you want to get involved with getting one done that is up-to-date you can read up on the process on the codex here:
http://codex.wordpress.org/Translating_WordPress
http://codex.wordpress.org/WordPress_in_Your_Language
http://codex.wordpress.org/International_WordPress_Sites