Blue Dragon may include online play. Speaking to Japanese website Gpara.com (translated by Eurogamer), Mistwalker producer Hironobu Sakaguchi said that they are in talks with Microsoft about developing a sequel and that, "specifics aren't finalised, but there's a possibility that it will be produced as an online title."
To what extent Sakaguchi is considering integrating online play is unknown; it could be anywhere from online trading to a full-blown MMO. It is pretty much assured Microsoft, with a minimal-at-best library of RPGs for the Xbox 360, will greenlight a sequel to the one title that has so far proven to be successful in Japan.
Blue Dragon will be arriving in North America August 15 and Europe in September.