For the Xbox 360 this is the first and only release where the expansion can be played. The remastered version of the original game contains an improved graphics engine and other enhancements. This release also incorporates all previously released DLC, which are all item packs:
The German Steam store says that the game can be only played in German language. This is not very uncommon, especially for games which are censored for Germany. However, despite the warning all other languages are available for German buyers.