About a year before FFXIII hit Japanese store shelves, trailers did let everyone know that the game would arrive by the end of 2009. In this instance, the "now in development" close to the recent trailer and a distinct lack of release year window, coupled with the recent story that they've planned a rough release window in mind, though it would be a bit later than they thought, suggests that we're looking at an actual release considerably further away than "2015", which we're already in. Yeah, no one is seriously thinking this would make it this year.
A release in Japan by the end of next fiscal year (by end of March 2016) can happen though.