Preparing for 70-688 - Supporting Windows 8.1

Hi,
I am just beginning to prep for the newer 70-688, Supporting Windows 8.1. I am having trouble finding study materials for this newer version of the exam. If anyone can point me in a good direction it would be appreciated. Also, how much different is this from the older version?
Thanks in advance.
I am just beginning to prep for the newer 70-688, Supporting Windows 8.1. I am having trouble finding study materials for this newer version of the exam. If anyone can point me in a good direction it would be appreciated. Also, how much different is this from the older version?
Thanks in advance.