Within the Installer you will find a wide collection of languages. The installer currently supports the following languages: Arabic, Bulgarian, Bengali, Czech, Danish, German, Greek, English, Spanish, Finnish, French, Hebrew, Devanagari(India), Croatian(Croatia), Magyar (Hungary), Italian, Malay, Norwegian bokmal, Dutch, Portuguese(Brasil), Portugues(Portugal), Romanian, Russian, Serbian, Svenska, Thai and more are being added all the time.
By default the English language is installed for the Back and Front-ends. You can download additional language files from the Joomla!Extensions Directory.

This is now implemented by inserting a Read more... tag (the button is located below the editor area) a dotted line appears in the edited text showing the split location for the Read more.... A new Plugin takes care of the rest.

It is worth mentioning that this does not have a negative effect on migrated data from older sites. The new implementation is fully backward compatible.