So far, there have been three versions released in Japan, and all three of those have been made fully available to the English-speaking market, though X-Change Three, which is available in English, has had content deleted and changed from the original version.
So far, there have been four versions released in Japan, and three of those four have been made fully available to the English-speaking market. The only exception is X-Change Three, which is available in English, but has had content deleted and changed from the original version.