There are a number of internationalization projects going on towards localizing most of our web properties, along with providing localized assets for core users (localized plugins, etc).
I have and am working on providing a translation platform for all plugins (code and readmes), and the related internationalization of the plugins directory and API.
@nacin has done some work on being able to install plugins (and themes?) in the same locale as a WordPress install, when set.
I’ve read that @dd32 has been looking into translating the new themes directory (info in theme headers, from styles.css) and probably API.
@samuelsidler (who is away this week) and I would like to organize a general chat in #meta-i18n sometimes during the week of April 13th, so we can map out everything in front of us, and push on all of them together.
To be discussed: Rosetta, forums, theme directory, plugin directory, themes, plugins, local P2s, GlotPress (soft and install).
Chat date/time suggestions: April 14th, at 2000 UTC (same time range as core chat, 1 day before).