There will be no Stopping Power in MW3

Speaking in response to an alleged multiplayer leak on the popular gaming website Kotaku, Infinity Ward's Creative Strategist Robert Bowling stated that Stopping Power will not be returning in Modern Warfare 3. Bowling also dispelled rumors about "Team Perks" appearing in MW3:

There is no Stopping Power period. We also have no such thing as 'team perks'. All other #MW3 MP details remain undisclosed.

When asked whether the lack of Stopping Power would prevent MW3 from having a fast-paced multiplayer, Bowling insinuated that base damage of weapons will be made higher than before in order to compensate for the lack of Stopping Power:

Stopping power is not what makes Modern Warfare fast paced, weapon damage does that. It can be fast without a single perk.