When a game is in development for longer than it should, course there will be some people that feel "This year will be the year" Even more so now that it's an actual mainline FF game now.
Here's why I strongly feel they will show new footage this year (playable demo closed doors): ( Wish there was an option for "New trailer with nothing but new footage in it
)
1) High priority within the company ( another words, a lot of games are taking a back burner seat while waiting for FFXV to release)
2) In September, Tabata said they are entering an "important phase" by E3 2014 ( a good 8 months) You think they are close to exiting that "important phase in development/engine.
3) Far into Development ( April 2014), How far is far? but when they say far I figure more than 50% (70% I feel personally). However, that last 30% of a "big game" is still a lot of ground to cover.
4) Hashimoto saying in response to E3 2014 question: "it's a surprise", If it wasn't going to be there, don't you think for a company that it's easier to say no for a E3 2014 showing, than it is to say yes to a FFXV showing? He said "it's a surprise" like he wants us to think it's coming this E3 all the while saying basically that " we have a surprise waiting for you." Why would you say " Hey it's a surprise" and then it's not at E3? That's some surprise eh? I am trying to read between the lines, like his expression while saying it, he makes it feel like " Should I tell them?" but just says "It's a surprise to cover it up".
5) Hashimoto says at the PS4 Launch in Japan that they are preparing new info for FFXV and that it will meet expectations. When saying "meet expectations" kinda sets the bar really high, like it's going to be information we want to hear ( AKA release window, new info about the game etc. Now the only 2 big conventions coming up are E3 and TGS. Something that will "meet expectations" would have to " in a marketing standpoint" have to be at one of those 2 Expos.
Anyways those are my reasons as to why I think it's come this year.