In Bing Maps V7 there was an mkt param to set the language of the map. This is gone in V8 and instead the browsers default language is used:
The Bing Maps v8 web control no longer requires the use of a mkt parameter to localize the map. If one is not provided the map will automatically attempt to set the language of the map based on the user’s browser settings and/or location.
But we need to set the language according to the website's user setting (which can be different from the browser language). Is there a way to set this using the Bing Maps V8 JavaScript API?