Realistically, I really, really doubt that the Feds are going to bust down your door because you jailbroke your iPad, nor is anyone going to out a gun to your head and force you to restore your iPad to iOS 6.0.1 stock.
Technically, it's
always been illegal to jailbreak your iPad under the DMCA. Due to quirks in the law, exemptions have to be very specific as to what's allowed, and the past exemption that allowed iPhones to be jailbroken ONLY mentioned phones. Without an express exemption for tablets, that has always been prohibited under the DMCA. That doesn't change today.
But again... no one raided your house when you did it, right? Granted, I'm not a lawyer, but I have a feeling that right now, law enforcement has more important things to do. Maybe the situation would be different if you were offering a service to jailbreak iPads for cash, or were running some iPad clone business that installed iOS on Android tablets, ala
Psystar. then I think Apple would start turning the heat on you and use the DMCA to do it.