Interesting, so when they say dedicated servers are they talking about using the magical 'cloud computing'. Also quite interesting, both next gen consoles are same architecture so would be an easier port than current gen but I would think if Xbone is dedicated servers and PS4 is p2p then would require completel different net code.
Forgot to add to my post above, Something I look forward to is properly lethal killstreaks. I know some people moan about IW killstreaks being overpowered, they are in comparison to blops ones but I think that is more blops ones are useless. Death machine, war machine, dragonfire, agr and stealth chopper aren't very good IMO leaving you stuck with lower KS or having the rarely achievable (to me) higher KS.