The gameplay trailer was pretty much gameplay, and you can see he does lots of wacky stuf midbattle, the Sony conference trailer had lot of scripted bits but had some gameplay too as well.
And i think FFXV is coming next year or maybe close to Japanese launch of PS4 wich should be early next year and them itll get localised and come to us by the end of 2014, Nomura said theyd only work on KH3 once FFXV (Versus XIII on the time) was ready or near ready, so if they are now working on KH 3 its safe to asume FF XV is comming soon.
I expect to hear alot more from Squenix on TGC, Sony said we should expect big things on TGC, that they saved some surprises for it.