It's true! Minecraft version 1.8 was leaked, and it -is- out there. But do not google for it! Some downloads for it may be bad news, or riddled with malicious code to take advantage of it's popularity. Follow Notch's word on this: @notchMarkus Persson (I am fine with you using it. Make sure you get it from the leaked url we are hosting, though) In accordance with this, I'm providing a link to the 'official' leaked url. http://assets.minecraft.net/1_8-pre/minecraft.jar There is no need to go hunting for it, there is no need to torrent it. Mojang's providing a guaranteed safe download, so use it.
You have to put it in the folder that mine craft jar is in and then remove the other one and then get rid of the (1)