ARM, POWER, and several other architectures still exist in big-endian, little-endian, and boot-selectable-endian versions; and some otherwise wonderful ARM chips (looking at you TI Hercules!) are big-endian only.
For any that are selectable, I was careful to say running little endian. :) You are right that big endian still exists, I just wanted to express that a significant part of the world is little endian now.
