D&D Online Module 2 Enhancements, Part Three

Turbine's official Dungeons & Dragons Online: Stormreach website has been updated with a third article revealing more information about new enhancements that will be available in the game's Twilight Forge module.
After extended periods of exposure to the elements, or after hours of dedicated practice, some characters have begun developing limited resistances to elemental damage. Rogues, through study of the traps they may face, can learn to blunt the effects of fire, acid, cold, sonic, and electric damage; rangers and barbarians can draw on their knowledge of wilderness lore to gain resistances to fire, cold, or acid; dwarves can get in touch with their inner rock, becoming resistant to sonic and fire damage.

These benefits will stack with other sources of energy resistance, such as items of fire resistance and the resist energy spell, and with each other if you have several of them (so a dwarven rogue/ranger/barbarian could stack four different fire damage resistances if he cared). They otherwise work just like energy resistances from items or spells.