what is the new call of duty called??

Call of Duty: Modern Warfare 2 (CoD: MW2)

Upcoming games:

Call of Duty 7:

Call of Duty 7 (working title) was leaked as being in production when David Kim, a senior animator at Treyarch, stated on a website "I am currently on my second title as a senior animator in the games industry with Activision / Treyarch on Call of Duty 7."[16] The game is rumored to be set during the Vietnam War.[17] Activision later confirmed that developer Treyarch was working on the next Call of Duty installment, set for release in Autumn of 2010.[18]

Call of Duty 8 (2011):

Activision announced an unnamed Call of Duty game will be released sometime in 2011. The game's developer was not specified. No other details were made available by Activision.[19][20]

Call of Duty (Sledgehammer Games):

An unnamed Call of Duty game is under development by Activision studio Sledgehammer Games; no release date has been announced. The game will reportedly "extend the franchise into the action-adventure genre". No other details were made available by Activision.[21]

Call of Duty Modern Warfare 2. Unless you mean the one coming out later this year. Then, it's "Call of Duty: Vietnam War". Not an official title.

You mean 'Call of Duty Modern Warfare 2?' or 'CODMW2' or 'Cod Mod 2'

Is that what you mean? or do you mean the one supposedly set in vietnam?