This very well may be the first next-gen Call of Duty.
During a GDC panel, Quest for Quality: Maximizing the Relationship Between Creative and Production, Sledgehammer Games apparently showed off the first in-game character models of their upcoming Call of Duty title which is currently rumored to be Modern Warfare 4. Checkout the character models just below and be sure to let us know what you think in the comments.
If it’s any indication from the character models, the gear looks to be modern age stuff, so maybe a slight hint towards the next game being Modern Warfare 4? The game has been in development for three years following the announcement of the three year development cycle for Call of Duty games.