I am inclined to say no, as you are not using a paid subscription from Norton (Norton Security Online is free with your Comcast account) but in order to be 100% sure - I have posed the question to a Norton Forum admin. I'll get back when I hear back from them.
Sorry for the inconvenience this might have caused. At this time, Norton Security Online provided by Xfinity is not able to be upgraded to New Norton 360. Only products that were directly purchased from Norton may be upgraded.
Thanks for the reply Dinesh B - I thought Norton Support no longer existed on this Forum.