Unannounced by Apple but verified by its own System Profiler, the new 2011 MacBook Pros feature a combined 2100mA of current available for peripherals charging through the USB2 ports -- seemingly made possible specifically for charging the iPad at the same rate as a wall charger would provide. The change is a significant bump from the previous models, which could only address a maximum of 1100mA and output no more than 500mA across multiple ports.
