Interviewee(s): Yoshinori Kitase, Takeshi Arakawa
Interviewer(s): IGN.com
Date: 2009 during Dissidia promotion in London (published May 7, 2009)
Key Information: By May 2009, according to Yoshinori Kitase, there was no way for Square Enix to predict what XIV and XV might bring, because all the numbered titles are very different to each other.
Notes: Answers translated from Japanese

FFXV dev. time may be shorter than XIII
Square Enix can't say anything about FFXV
Will FFXV be released in 2 years?
FFXII director tight-lipped about FFXV