Armor will be class restricted.
No more Rogues running around in Plate like it should be.
Weps will be restricted too.
I can only tell about Mages skills because, I am unsure about the rest of the classes.
I have seen Rogues use two daggers and kill things twice as fast

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More mobs in Catacombs for the higher levels.
More mobs everywhere really.
Magical items and necklaces drop

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Good drops too. Like 42 health and a 42 energy one I think.
And, a 19 armor one

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They went back and added a look to all the Silk items and Chain and so on.
Ice Shards (Mage skill) is the hardest hitting.
Running is a lot smoother.