Well, they aren't really new. They've been around for awhile, but inaccessible areas were created in dungeons like Despise and at the time we thought they might be entrances into SA. The areas I refer to can be found on the bottom level of Despise, the very southern side of the dungeon. Down by the Cyclopses and Titans, there's an inaccessible raised area and down by the acid elemental, there's an inaccessible area with huts. It seems nothing has been done with them, but what was the intention? Will something be done with them?