Not a whole lot of interesting stuff there, unfortunately. Only 2 deleted scenes... the previously leaked scene between Tywin and Pycelle and one with Jon contemplating escape from the wildings... a fairly unremarkable scene.
As far as the extended scenes go, there wasn't a ton to them, at least not that I remember being different. The only thing that stuck out is that Mance shook Jon's hand after he learned that he killed the Halfhand... I don't remember that, but I think the rest of the scene was the same.
Other scenes were a brief conversation with all of his men before Robb admonished Edmure for his "victory" at The Mill... and a conversation at the Small Council about potentially sending deserters from the battle of Blackwater to The Wall... I honestly don't remember how much of this actually happened, but it was by far the best of the scenes in isolation.