From the update:
The rules document for Summer Rampage is now available!
Summer Rampage roars back to life in 2012 as an open-play event! Bounties, Finishing Moves, and Rampages all return as warjacks and warbeasts wreak havoc during a grueling array of tumultuous trials and multiplayer mayhem. Introduced in 2007 as the first organized-play event pitting WARMACHINE and HORDES players against each other, the format focused heavily on warjack-on-warbeast combat. Mixed WARMACHINE/HORDES events soon became the norm, and Summer Rampage evolved into a short-format league with global map effects. For the fifth anniversary of Summer Rampage, the event will once again focus on Bounties, Finishing Moves, and Rampages.
The Summer Rampage 2012 Event Kit will be available August 1 and supports any number of players. The kit contains awards for Artisan, Arcane Mechanik, Beast Handler, Dominator, and Rampager.