I think they will be forced to release both games in 2009. I dont think this will cause them any troubles though, as western FFXIII sales will most likely be = DQIX + FFXIII sales in Japan. So FY 2010 wont look bad in comparison.
By the way, it seems like it's going to be the first time ever a mainline FF game will be released on a losing console in Japan. Will be interesting to see how it does.







