Here's a pic of the pieces in the main set:
And some closeups of a couple of them:
The "new thing" that DF is doing is to offer some additional pieces that you can buy "a la carte". This allows the customer the ability to buy whatever pieces he or she wants. And who wouldn't want all of them? They're fantastic! These extra five pieces range in price from $12 to $39 USD.
|Hellscape to Den of Evil conversion piece|
|Hellscape to cavern conversion piece|
|Hellscape straight wall with stairs|
As always, these pieces look great and I can't wait to get them in my hand to get a closer look!