Honestly , it hasn't changed much. The only thing now is that the economy is strange. You can buy gold on the real money auction house for almost nothing, which in turns allows you to kit out all your lvl 60 characters with half decent version of legendaries to facepalm inferno on monster power 1 to 5 for the price of a happy meal... Why even bother playing and farming when you can buy gear that blows what you would find on your own for the price of a coca cola bottle or two.
Gold is devaluated, the top tier items are overpriced to the point where only exploiters and gold farmers can buy them and frankly unneeded for inferno unless you're really into farming inferno on Monster Power 10... Which is probably less efficient than farming on a lower MP anyway in terms of drops.
In terms of endgame, asides from tedious farming, you got key farming to create infernal machines and defeat uber bosses in hopes of getting the hellfire ring, but that's it, there's still not really any interesting endgame content... Sure , you can get paragon levels now , if you're one of these guys that want to level grind for all eternity, but meh, not my cup of tea. PVP is there, but nobody does it.