From CNN Business:
PepsiCo (PEP) announced Wednesday a first-of-its-kind nitrogen-infused cola that has a creamier and smoother taste compared to traditional carbonated sodas. The beverage, called Nitro Pepsi, is being released in the United States on March 28 and comes in regular and vanilla flavors.
Nitrogen is more commonly used in beer and coffee drinks, like Starbucks' wildly successful cold brews, as nitrogen gas creates a silky, foamy texture. But since those come out of taps, Pepsi had to come up with a way to maintain the nitrogen in a can.