Some folks have asked "Where is the <non-english language> installer for VMM already?"
It's in there. The "English" download includes all the languages VMM supports: English, German, Spanish, French, Italian, Japanese, Chinese simplified, Chinese traditional, and Korean.
So, for example, even tho the trial download refer-page says
"The Virtual Machine Manager trial software is available in the following languages:
Please download and install and choose your supported language during setup.
Enjoy, genießen Sie, goce, appréciez, goda di, ??????, ??,?????.