Honestly, this smells like spin-offs (which can be good!) We have a FFX HD coming our way, more than likely we will be seeing a FFXII HD as well possibly FFX-2 HD as well.

Once those turn HD it will be easier for them to port sequels to those series since the coding for the system is done, and you have the character models (its why Assassin's Creed was able to make so many games a year, all the textures and character models were finished basically after the 2nd; same goes with all those other games that release yearly)

Also not to put false hopes in people's hearts but...once they remake 6/7/8/9 HD (if any of them actually come D: ) they will be able to make sequels or spin-offs since the character models/textures would be complete. But it seems like an interesting thing to make claim.

Side Note: XIII-2 comes out Jan. 31, 2012 (not Feb 22 like the article claims), which is strange since the article is recent...