Answer
I believe they stopped making Call of Duty games for DS.
All the games versions being released have been released. There will not be a 3DS Game version
Modern warfare 3 is better
The intervention is not in modern warfare 3. Modern warfare 2 has the intervention.
Modern Warfare 3 is not in 3D.
Modern Warfare Mobilized(the DS port of Modern Warfare 1) & Modern Warfare 3.
It does not look like it only PC PS3 and Xbox 360 have preorders for the game I will expect so because they did Call of duty black ops for the DS, and call of duty is on 3D on PS3, the highest chances are there will be Call of duty Modern warfare 3 on the 3DS.
Modern Warfare 3.
Call of Duty 4: Modern Warfare came out first. This is the first game in the Modern Warfare series, and Modern Warfare 3 is the third game in the Modern Warfare series.
There is no demo for Call of Duty: Modern Warfare 3.
There are no demos for Call of Duty: Modern Warfare 3.
Modern Warfare 3 IS World War 3.
I believe modern warfare 3.