Windows Web App Gallery is an online web app browser for Microsoft Web Platform Installer (Web PI). If you're maintaining a localized version of WordPress in one of Web PI's supported languages, you can add it to the Web App Gallery.
Note: As of now, submission of updated version is done manually. Please make sure to submit a new release after every update because the past submissions will become obsolete (yet shown as the latest version on the Gallery).
Generic steps for submitting apps to the Web App Gallery are described on Microsoft's site. Below are WordPress-specific instructions.
The following steps assume that you are using WordPress.org's build tool. This means you are using the admin panel of lang.wordpress.org to create releases.
You can read about local sites on this Codex page: International_WordPress_Sites.
There are 5 steps to this process:
Download and translate this XML file on the WordPress SVN repository.
http://core.svn.wordpress.org/branches/iis/parameters.xml
Not everything has to be translated. You can take a look at the Japanese version of the same file to find which attributes need translation.
Create /branches/iis/ directory within your language folder. It will look like this:
http://svn.automattic.com/wordpress-i18n/lang/branches/iis/
Then add your parameters.xml file (above) under the directory. You will also need to add copies of manifest.xml and install.sql files. Nothing needs to be changed in these English files. Now your iis directory should include three files.
Again, see ja directory as an example.
Log in to your local site (lang.wordpress.org/wp-admin) and go to "Tools > Translations for lang to create a new package. You won't be publicly releasing this, so the package branch doesn't matter.
Your package for the Web App Gallery should appear on the "Build" list as X.X.X-IIS, along with regular X.X.X version. Download the zip format of the IIS version (don't unzip).
Before submitting for the first time, you should test the package you've just downloaded. For instructions, please read the "Test Your Package" section of IIS.net web site.
Go to the App Submission page on the Web App Gallery and fill out the form (Use the dropdown at the top to toggle languages). You will need to login with Windows Live ™ ID. Your translation team will probably want to create a shared Windows Live ID.
You will receive a submission confirmation, after the form is completed. Then you should receive an app creation notice in a few days/hours.
When a new build is created, you will need to go through this "Submit" step. The second email you'll receive will say "SUBMISSION MODIFIED: ..." in the subject line.
The Web App Gallery site currently supports the following languages:
These language teams have been distributing its packages on Microsoft Web Platform Installer.
These languages are supported but NOT yet set up to distribute its packages on Microsoft Web Platform Installer yet.
There may be more languages in the future. You can check the current status from the language dropdown list on the Microsoft Web Platform front page.