Hello!

At the moment I study for the v7. All the materials are from the taken course, but I reply to you topic because regarding to v8 exam, there is nothing different in materials comparing it to v7. All the difference is in method how the exam gets delivered to a student. The differences were made so that CEH v8 would meet ANSI standarts, thats iT!
I believe you could just google "CEH differences v7 v8"
Hope it made sense.

A for the materials -> go for a book which is written by Matt, because reading official CEH materials gets me a little sleepy, just of the massive amount of info.