5.6 Is this going to be the last Final Fantasy?
No, definitely not. I still wonder how people come to that conclusion, but there's no truth to this rumor. Last indication was an interview from Square president Wada in Mainichi Interactive (translated in http://www.rpgfan.com/news/2004/1186.html) mentioning that some innovations designed for FFXII might become standard for the series.
In the meantime, Wada mentioned in one interview that work was underway on FFXIII as well.
Can we close this thread now?