It's kind of like Nintendo announcing Metroid Prime 4 at E3. People are super hyped right now, but if it takes too long to come out after the announcement, the hype will begin to fade. Not that you're anywhere near as bad as an announcement like that, that's probably still years off, lol. Edit: Bit of a lose/lose situation if you ask me, lol. Announce it too soon, and hype will fade, announce too close to release and you have a hard time maximizing hype. Guess you'd just have to consider the projected reception of the game and plan accordingly.