Is it Ok to announce a game that is still many years away from release?

[Farsala]

I learned the hard lesson of buying the PS3 for Final Fantasy Versus XIII. Now I just forget about games with a long release date until a few months before.

I still think it is okay to announce these games ahead of time, like the next FF or the next Zelda or next Mario. Everyone knows they are coming, doesn't really matter when to announce them.