Can you jailbreak ios 6.1.3 on iphone 4s yet?

Thats all i wanna know. If you could throw a link at me that would be awesome. And i don't need people telling me its dangerous or any of that.

Added (1). Or when can it be jailbroken. I keep hearing about this ios 7 and i don't know what that is.

I'm not going to tell you that "it's dangerous." I'm going to tell you that there won't be one for iOS 6.1.3

Yes with redsn0w or sn0wbreeze This site has all you need http://www.insanelyios.com/jailbreaks/