Urbn31 - The list of tests during the Stage 2 interview looks pretty much similar to what some of us discussed earlier in this thread. We're aware of the changes in the Quick Math Test, but nothing else besides that. I don't know anyone who has done their Stage 2 interview in 2012 or even late 2011.
Some of them don't have much to say with regard to the Math test. It seems to be quick subtraction, multiplication, graphs etc.
Technical Interview - Get back to your books (CPL/ATPL). Ace the Technical Interview would be a good option.
There isn't much you can prepare for a group exercise, unless you can form a group of your own and practice that particular exercise before you go to the interview. As for flight planning, it is best to brush up on the fuel/distance/time calculations. This is my personal opinion.
I don't think the hand-eye coordination test exists for AE pilots.