Square-Enix has gone through some massive internal restructuring in the wake of XIII. XIII-2 is admitted to be the last game the S-E first party production team made before it was scrapped.
Pretty much all the rules of Final Fantasy development are now out the window. They might have a rough sketch for XVI, but as we've seen, they basically make their roughest ideas public the instant you can make a trailer. Chances are they're working on XV's sequels. It's possible Agni's Philosophy is XVI's draft, but it's also possible it's an XV sequel. Or they were being really honest when they called it a tech demo. We just don't know enough to tell.







