The folks over at GameZone have been busy writing E3 previews of game, among them are DAoC's up and coming expansions New Frontiers and Catacombs. Here are snippets from the previews, to read more just follow their links:

Dark Age of Camelot: New Frontiers
Keeps are now upgradeable and they will change as players acquire experience and the finances. Players will be able to extend the wall, buy guards and siege equipment. Is an opposing army pounding at the main gate with a battering ram? Maybe pouring a bucket of hot oil on them will diminish their enthusiasm.
Dark Age of Camelot: Catacombs
Well, get ready. Dark Age of Camelot: Catacombs is about to change all that. Geared for release at the end of the year, Catacombs revolves more around the individual player experience as opposed to the realm-versus-realm experience. And while the game will feature a host of instanced missions and static missions to appeal to both the casual and hardcore player, the biggest change will be in the graphical upgrade. Stand two of the characters side by side, and the difference is like day and night.