So, as we all know, Ivalice has become it's own little world within the Final Fantasy series. Several games take place in the same world, usually in different regions. FFT, FFTA (more on this later), FFTA2, FFXII, FFXII:RW, and Vagrant Story all take place in Ivalice.
According to the Final Fantasy Wiki, Final Fantasy Tactics Advance starts off in the "future" of Ivalice. In FFTA, Mewt creates a dream world based on the Final Fantasy games which are, apparently, based on 'real life' (within the game) history. Nothing that happens in that version of Ivalice is canon, as far as the outside world goes. However, when Luso (FFTA2) enters Ivalice, it seems to send him back in time. The Montblanc in FFTA2 is not the same Montblanc from FFTA, but he is the same Montblanc from FFXII, for example.
Anyway, I find it all very fascinating, especially when the games reference the little minor elements of various games. For example, the bestiary entry for Flans in FFXII mentions an guild called the Iron Stomach, and their various recipes based on monsters. In FFTA2, there are several missions where you have to gather ingredients for the Iron Stomach. Little things like these are what make Ivalice such an engrossing place.
So yes. Discuss Ivalice. :P