I came across this news last month and was a bit dissapointed. I was aiming to move to Zone just before this accouncement came as I very much liked the idea of holding my own encryption keys. Unlike with some other cloud storage providers, my stuff would remain always remain my stuff in the zone.
If you are a Norton Zone customer, today (7th July) sadly marks the beginning of the end. According to the Zone placeholder page, from today you'll no longer be able to share files or create public links. The end itself comes in one month on the 6th of August at which point Symantec will terminate the service and delete any remaining Zone files.
My heart goes out to all those who shed sweat developing this product.
Full details on http://www.nortonzone.com/