Took them long enough. I'm amazed at how long Intel let ARM eat into the processor market from the bottom up. Implementation of the Quark chip has amazing potential.
As I recently learned, every SD Card already comes with an ARM processor. They can be programmed, if you know how. To do funny things like "patch" every .exe file you copy on it...
Fun fact - apparantly even these processors can be in the 100 Mhz range, which means they are superior to the first and second computer I ever had!