I agree there are no huge surprises, but I think you are underestimating the difficulty of redesigning the form factor in under a year.
Even just changing processors, radio chips, adding gyro, camera in the exact same mechanical form factor is a non-trivial change. This is a completely different housing that needs to be integrated and tested. To the user, it's the "same size" device- a flat device with a glass screen, but make no mistake, this is a re-engineered device less than a year from the previous. (Yes, parallel development, etc. but still.)
Not revolutionary, but far from "milking the original".
Even just changing processors, radio chips, adding gyro, camera in the exact same mechanical form factor is a non-trivial change. This is a completely different housing that needs to be integrated and tested. To the user, it's the "same size" device- a flat device with a glass screen, but make no mistake, this is a re-engineered device less than a year from the previous. (Yes, parallel development, etc. but still.)
Not revolutionary, but far from "milking the original".