My assumption from al of this is that H3: Recon will be an entirely new game. Possibly something along the lines of some of the Tom Clancy games set in the Halo universe. The reaon for calling it Halo 3: Recon though could be that they want to specify that the game will take place during the events of Halo 3. Not before (like Halo Wars), or after. It is just a different perspective of Earth's struggle during the Covenant invasion. In summation, it will be a whole new game, while all the Mythic achievables will be part of a Halo 3 map pack. Two seperate entities, one awesome franchise.