The promotion is now a Free Apple TV 4K when you pre-pay for 3 months of service ($35/mo) or a free Amazon FireTV when you pre-pay 1 month of service. There is also a BankAmeriDeal on some cards that gives you $35 cashback when you purchase 1 month of service at the normal price. I had the offer on my Alaska Airlines card. Here are the terms of the BankAmeriDeal.
Earn $35 cash back when you get DIRECTV NOW! No annual contract and no cable or satellite hardware - sign up and stream instantly.*
*Req's. eligible wireless svc. & streaming through DIRECTV NOW App. DIRECTV NOW renews monthly until you cancel. Excludes DIRECTV NOW free trial offer. Other exclusions & restr's apply.
Offer expires 4/2/2018. Offer valid one time only. New customers only. Excludes DIRECTV satellite service. Must pay 1 monthly DIRECTV NOW bill of at least $35 by 4/17/2018 using the card associated with the offer to earn $35 cash back to your eligible debit or credit card. $35 cash back will be delivered to account at least 30 days after your qualifying payment is made.