If you already have one I don't see why you wouldn't..and even if you don't it's still probably worth it since you have a computer (I'm assuming) If not..then the current speed will be plenty for you..
I've been waiting since August for a MBP update so I'm waiting until they the update arrives. If you have a computer then don't rush. It would be horrible to see you buy a new MBP now and then Apple release a new one in 2 weeks.