Comment 8 for bug 767342

Kyle:
* What's in the pool
I do mean literally the language-support and language-pack pkgs. You might want to check with Tony for what stuff gets included in the builds his team puts together in terms of language pool if you want to match up verbosely.

* No network case
I personally think that's a bad experience to allow the person to pick a language that you don't really support after the out of box experience unless they have web access (part of the reason why that preseed was created). It potentially creates a lot of confusion for the end user since they have no idea what this language tool is or how to find it.

Evan will make the call whether or not to include a patch like the one you listed for oneric though.