This version emerged from a few requests by multilingual blogger (especially bi-linguals). This version allows suggesting the original language for a phrase (other than the default) using the html lang attribute.
The paragraph/phrase marked with a different language than the original would be left intact when the target language equals the language marked, but will be translated in other languages (even in the default language – when such support is enabled).
For example, the following phrase is written in Hebrew and surrounded with a span with lang=he attribute, if you’re reading it in another language, you will be able to read it in that other language (English included).
שלום לכם, באיזו שפה אתם קוראים את הפסקה הזו?
It is now also possible to use the only_thislanguage class to mark a certain paragraph to appear only to readers in given language. A change in behaviour for this version is that now, the translate default version configuration option will only be used for non default marked paragraphs (and posts, see below regarding theme patches).
A patch would be provided to the default theme (didn’t decide if we’ll wait till version 3 of wordpress) that will enable marking a certain post’s original language, we’ll keep you posted.
Hope you enjoy this version.