Microsoft released "Visual Basic for Windows Phone Developer Tools" RTW. This release doubles the developer audience for Windows Phone, by enabling Visual Basic developers to create applications for Windows Phone, as well as C#.
The RTW provides "Go Live" support, which allows VB devs to submit their apps to Windows Phone Marketplace! Another improvement is that the RTW release is now available in all languages that WP Developer Tools support: English, French, German, Spanish and Italian.
Note: Please make sure you've the pre-requisites installed, before downloading this release! Pre-requisites include Visual Studio 2010 (Professional, Premium and Ultimate), as well as the Windows Phone Developer Tools. You can find a list of known issues here.