Well according to EGM, breaking the street date can be dangerous for a store. They can be fined anywhere between $5,000 and $50,000 (or maybe $500,000, I don't have the mag at hand right now.) by the game company Mom and pop stores are more likely to break the street date, but EB does release a game early from time to time. I guess it depends on how is publishing the game.
I got the new Castlevania game yesterday (I know it not Nintendo) but I must say it's really not that bad. I got to my first boss last night, but died because I didn't have any potions or what left. I have to redo all that I did since I last saved, a bummer but really not that bad because the game isn't that hard.
And also, behold the pie monkey.