The video portion of the blog demonstrated some of the new features, including the new radial menu, which Shaw called "a whole new way to interact with the game." He said, "It allows for much more action-based combat, so players who are familiar with FPS games or action-combat games will be much more at home playing Darkfall." The new UI will allow also players to switch between the different roles, such as from warrior to caster, at will.
The dev blog also offers more details on the feat system (which rewards players for acts of bravery, skill, exploration, or development) as well as the new personal and clan currencies. You can read more on these changes in the dev blog and preview the new UI in the video after the break.
[Thanks to Bartillo for the tip!]