The V-Jump Edition
Apparently, V-Jump, the same people who brought out the Japanese players guide and CT: The Perfect, held a contest for free copies of Chrono Trigger. According to this site, the only difference is the outer packaging, while the contents are exactly the same as the final. It's not clear right now as to if this was released sometime before the public release, or if it was simply some giveaway. I'll update with more info as I find out about it.