How to Root Blackberry Playbook

I've been diggin into the Playbook for a few days now, trying to figure out who against who here. the goal of course is gaining root.

The things we know so far, is that the device is dual-core 1Ghz cortex-A9, armv7 architecture using OMAP4 platform. On top of it runs a QNX linux that uses Adobe air sdk for application.