Dibella's Watch adds an entire new continent to Oblivion. It comes complete with a major city, castles, towns, villages, farms, monasteries and all the good stuff that makes up a Medieval landscape. There's also fighting to be had and quests to be made!
The Deadlands are being colonized as we speak. But this is not the land of friendly and civilized people, like in the east, but of barbarians, savages and some really scary creatures! Beta 05 is released tomorrow.