Revelation Online will be releasing its upcoming CBT on 15th Jan 2015. 6 different classes have been revealed by the official site so far. The video and brief description of each class are highlighted in this article. The official English names of these classes are not available; they are translated by me based on the description of the class on the official site and my personal impression.
Light Blader 光刃
Elementalist, despite the weapon she yields, is actually a spell-caster. She can deal huge damage to large area at long range and has various crowd control skills. She is specialized in fire, ice and lightning elemental spells.
Summoner has the ability to call upon familiars, such as gorilla, snake etc, with aid her in battle. She is specialized in protecting and healing allies, asides from her long-range damage dealing capability.