Don't know if what this comment said is true (Youtube) but, it certainly brought back hope about it just being a rumor.
"You Guys Remain CALM!
Senior US Editor for RPGSite.net ( and a resourceful source for all things Square Enix ) Erren Van Duine responded to the rumor on Neogaf, stating that Final Fantasy Versus XIII is alive and kicking and will be shown at this year’s Tokyo Game Show.
[The Kotaku rumor] goes against information I was told quite recently, which was that Nomura is hard at work on the game and something of it will be shown at TGS."