Final Fantasy XV demo is about 80% complete

[LeonBlade]

Pretty sure he is just speculating because Kitase mentioned he has another project(s) to announce next year.

You can see all the mini Q&A thing here from 4gamer.

This is how Kitase answers:

2014年はクラウドゲームサービスなど新分野への挑戦をしてきました。
2015年に向けてもいくつかの作品を準備していますが、その第一弾としてiOS/Android対応タイトルの「MEVIUS FINAL FANTASY」を発表致しました。
どうぞご期待ください！
2014 has brought us challenge in new technologies like cloud computing. Going into 2015, we have various titles lined up, one of which is announced today, "MEVIUS FINAL FANTASY" for iOS and Android. Please look forward to it!

The article he is quoting is just mentioning they don't expect FFXV and KHIII to come out next year, those are the writers words, not Kitase's.

One thing I find hilarious are Akihiko Matsui's (producer for Final Fantasy XI) answers for the first two questions.

＜質問1＞2014年に発売されたゲームの中で、最も感心させられた（あるいは衝撃を受けた）タイトル
<Question 1>In 2014, which game impressed (or shocked) you the most?

タイトル名：「アイドルマスター ワンフォーオール」
Title: THE iDOLM@STER ONE FOR ALL

＜質問2＞2014年に発売/公開されたエンターテイメントコンテンツの中で最も印象深かった作品
<Question 2>In 2014, which other entertainment content released/published were you most impressed by?

「THE IDOLM@STER MOVIE 輝きの向こう側へ！」
THE IDOLM@STER MOVIE: Beyond the Brilliant Future!

The dude loves iDOLM@STER, what can he say? (I don't blame him)

 

[Takoyaki]

^Thought so. Thanks for translations and Matsui's the man. Great taste, lol.

 

[Jenova]

So the people that paid will be getting a greater demo and the free one will be the lesser? Sounds fine to me.

 

[LeonBlade]

So the people that paid will be getting a greater demo and the free one will be the lesser? Sounds fine to me.

Yes, that's how it will work.