Nothing is official or final that is posted in this forum, its a forum for ideas. And fans to suggest thier ideas/suggestions etc..
The team has their own seperate forums for finalizing game details that will be passed down to you when they are done or ready for presentation, and ready for critique.
So don't get upset if someone posts something that is totally wrong, or that doesn't fit in. Just clue them in a nice manner 8)
All almost final gameplay/modes etc.. (Well as final as you can get without play testing) Will be posted in the announcements forum, or another forum for Gameplay discussion might be made.