Here we have a quick overview video displaying the content players will receive when they pony up for the Call of Duty: Ghosts Season Pass. It encompasses four DLC packs including maps and weapons, as well as an episodic "Extinction" experience, and throws in an exclusive DLC pack with a new character head and some other features (including a reticule, which I didn't realize was the kind of thing we were doing for DLC nowadays). All that for $49.99.
They're also offering a little something to those who are planning to upgrade their Call of Duty experience to the new console generation. Season passes will carry over from PS3 to PS4 or Xbox 360 to Xbox One at no additional charge until May 31, 2014.
This 2015 D.I.C.E. Summit talk explains the entire history of Call of Duty's zombie mode
10:30 AM on 02.12.2015
Call of Duty unleashes DLC, zombie horde on PlayStation and PC in late February
5:00 PM on 02.04.2015