The link is dead, but the game hint is viewable on the FRC landing page on
http://www.usfirst.org/roboticsprograms/frc/
Hmmm...
The hint image is an original image, not found anywhere else on the internet based on a TinEye search.
It looks like a multipositioning step of some sorts. Possibly the field this year will have a wall that will vary in height randomly?
EDIT:
Also, since it is listed as "1st Clue.jpg" we might be in for some more clues closer to kickoff.