I searched in the forums but did not find this deal.
Comcast is offering $200 cashback for adding a new line or upgrading an existing line on Verizon (for Comcast customers only).
The cashback on upgrade was $50 till yesterday, they raised it to $200 starting today. You can even buy the latest iPhone 6 through them.
Great deal if you are a Comcast & Verizon subscriber.