I just got back form the inter-agency visitor center to pick up my overnight permit for tomorrow. They told me that due to the fire they are not issuing permits until further notice. They told me currently the fire was 25 acres but they were concerned it might grow rapidly as it is very hot and dry in lone pine.
They took my name, reservation number, and phone number and told me they might give me a call if there is updated information but to check @MtWhitneyInfo on twitter for updated information.