IGN heading: Old dog, new tricks
Destructoid heading: Old dog, old tricks
Predicting this'll be the real start of CoD's downfall. Getting the worst reviews of any Call of Duty to date (minus spin-offs) and definitely seems like there's less interest than in any of the last 6 years. Should be less sales; with people either not bothering, migrating to Battlefield or waiting for Killzone (or even Titanfall). If they can't even be bothered to make/use a new engine for next year it should be another write off.
It'll obviously take longer to fall than Activision's other properties (Guitar Hero & Tony Hawk) but I can see it happening unless something drastic happens.