Windows Server 2008 Multi User Interface Language Packs
Microsoft released Multi User Interface Packs for Windows Server 2008 a couple of days ago.
They don´t require a specific edition of Windows Server 2008, so you can install them on Standard Edition if you want to.
Why is this only for Windows Server 2008 and not Vista? If you want to download and install a language pack on vista, you´ll need Ultimate Edition, why is that?