Looks pretty cool, but not sure exactly what it is. An RPG, competitive multiplayer, an action game?

A team-based multiplayer melee combat experience, War of The Roses sees players and their band of knights going toe-to-toe with their opponents using authentic and visceral weapons of the time period including broad swords, long bows and battle-axes.

Built on a stunning graphics engine which vividly portrays the fighting from an up-close-and-personal third-person perspective, War of the Roses features both online multiplayer and a single-player campaign. Players will get the chance to lead their warrior through a rich progression system, gaining upgrades and unlocking new content on their path from filthy peasant to unstoppable armored killing machine.

From the video's description on youtube.

Ooh, this sounds kind of like what Dark Messiah of Might and Magic tried. Though this looks considerably better.