I just updated to this kernel version on two of my RPi2 Model 1.
I wondered why my w1 sensors didn't work anymore.
The reason was: The directory '/boot/overlays' got lost and was replaced by a file 'overlays'. This file is the documentation file and should be called 'overlays.txt' if i remember right.
As a workaround I corrected this and played back the complete /boot/overlays directory from the previous kernel version, this works at least for my temperature sensors.
regards, cm.
EDIT:
... -4 is out and solves this - thanks!