They say it's like "the fourth DLC". Huge new area with lots of quests and good voice-acting. I have installed it but I haven't figured out how to get there yet.
I installed it today and played 5 hours in a row. It's really great!! Quests are awesome and not always the same. To your I didnt get there yet, i maybe can help you by saying that you have to go to Riften and search a man who's name is something like 'Jalasmar' or so (sry but you will find him). He is an old man with beggar stuff, but if you don't play Skyrim in english, you will figure him out very fast. I hope I could help You and wish You a great time (I had great 5 hours today and all together the mod shall add 20-40 new hours) and lots of fun! BTW, the landscapes are just awesome <3