I also received an email but I own a 2015 SV and apparently Nissan will cover the entire cost of the upgrade assuming I want it.
We are contacting you with an important update regarding upcoming cellular network changes and how these changes will affect your access to NissanConnect EV, formerly CARWINGS, in your 2015 Nissan LEAF. Depending upon your interest, this update may require you to take some action.
The NissanConnect EV features available on your vehicle will be affected by the planned discontinuation of the 2G network by our service provider, AT&T. Specifically, after December 31, 2016, the 2G network will be unavailable and your vehicle will be unable to access NissanConnect EV features such as Remote Climate Control and Driving History.
If you have not already enrolled, but are interested in doing so, please enroll in NissanConnect EV as soon as possible - you must enroll before June 30, 2016 to activate the service for utilization on the 2G network through December 31, 2016.**
If you desire to continue to utilize NissanConnect EV after the 2G network becomes unavailable, you will need to have the Telematics Control Unit (TCU) in your vehicle updated. For owners of model year 2015 Nissan LEAF vehicles who are interested in continuing to use NissanConnect EV, Nissan plans to cover the parts and labor costs to install the new hardware in your vehicle.
Nissan expects to be able to communicate details regarding the process to update your vehicle in late summer 2016.
NissanConnect EV provides a suite of electric vehicle exclusive features such as State of Charge and Remote Charging allowing you to manage your Nissan LEAF from almost anywhere you need to be. With NissanConnect EV you can view your current estimated driving range, the estimated amount of time needed for charging completion as well as your driving history.
Nissan is committed to working with you to make this transition as seamless as possible. We look forward to staying connected with you through NissanConnect EV. If you have any questions, please contact us at 877-664-2738 or view a list of frequently asked questions (FAQ) at NissanUSA.com/connect/faq.
Nissan Owner Services