For those of you not familiar with this game, it will probably have a monthly fee on release. It is developed by Destination Games and Richard Garriott, who was the creator of the Ultima series. Many of the Ultima Online employees have also worked on this game including Richard Garriott, Starr Long, Paul Sage, and others. It is being published by NCSoft.
Tabula Rasa is an MMORPG with a sticky targetting shooter system. The battles are more active than the standard MMORPG and often involves switching of weapons or taking cover behind objects. Hits and misses, as well as damage is calculated with standard RPG elements, however, these calculations are also modified by Cover, running, crouching, etc. Certain cities/outposts can be captured by the evil Bane, an alien faction bent on controlling the Universe, which can effect spawns and missions (quests).
This game will contain no required "grinding" of mobs to level up. Pvp will also be implemented such as Clan Wars and Duels.
Perhaps one of the greatest features of this game, is one that no other MMORPG has. There are ethical missions that involve the player to choose moral choices that can effect not only that specific mission, but later missions to come, as well as npc dialogue to the player.