The big difference is that it will be mandatory for all ISP's to offer the means to do that which isn't the case now in some countries. Basically it's the big content production guys in Hollywood making it possible for them to sue out of existence/cut of Internet access to everybody they want to. The whole thing has nothing to do with security/anti-spam/anti-terrorism or whatever. It's all about the money they think they're loosing due to piracy. Anyway, I can rant all day about this, so I'll stop myself here.