Following today's maintenance, Principal Lead PvP Designer Gabe Amatangelo posted a short blog posting regarding the Ranked Warzone feature being introduced in update 1.3. In the blog, Gabe explains how the system is setup, how the rankings operate, and goes on to talk a bit about the future of Ranked Warzones.
Quote from Gabe AmatangeloIn the current Game Update 1.3 PTS build, you’ll find a new button in the Warzone queue window: Queue Team Ranked. This button is available to any player that is in a group of eight level 50 players, and allows that group to queue up for Team Ranked Warzones with a single click.
Check out the blog post for his comments in full and if you're interested in seeing Ranked Warzones before the patch goes live, be sure to check out the PTS.