I haven't seen this mentioned anywhere, but will there be a PBE (play by e-mail) or multi-player save feature?  Some of us at times (with small children) don't have a lot of time to sit in front of a multi-player game for hours on end.  Will there be a way to save the match so that a two player match can be continued? Or a take a turn, email, take a turn, email setup?

Sure, it would take months to play a game this way, but some of us are far to busy for a live multi-player match.