This was posted today at the official Mythic site:

It is time to officially take the wraps off our next big project, codenamed "Frontiers". This is Dark Age of CamelotÃ???s long-awaited RvR overhaul; where we take the lessons weÃ???ve learned from the last two years of RvR combat and make appropriate changes. This will be a free expansion, available via download. It is currently scheduled to go into a limited beta in February.

• Make RvR combat more accessible Ã??? finding battles more quickly. We want players to be able to log in, find a battle, and RvR.
• Add more tactics and diversity through geography, siege/boat warfare, expanded keep upgrading options. There will be more disparate places to engage in RvR, with more strategic elements.
• More concrete bonuses and abilities as rewards for RvR Ã??? in other words, make the awards for RvR more obvious and better presented, and make sure that the Realm ability system is well balanced and logical.

You can read the full release at this link.