Hovering over a link using Special:MyLanguage should show a page preview of the translation of the page into my current language if one exists, otherwise a page preview of the source language version. In fact it just displays the Special:MyLanguage link as though Page Previews wasn't installed.

For example, if I have a page Lorem_ipsum souced in English and a French transation Lorem_ipsum/fr exists, a link such as:

[[Special:MyLanguage/Lorem_ipsum]]

should show a page preview for Lorem_ipsum/fr if my current language setting is French, but a page preview for the source language version if my language setting is English, or a language for which a translation doesn't exist.