Norton 360 Still a Valid Program?

My Norton 360 subscription expired a few days ago. Rather than renew at a standard (high) renewal price, I tried to buy a new subscription. Even though N360 could be renewed via my Norton account, it did not seem to be available for independent purchase. So I purchased a 10 device Norton Internet Security Premium download instead.

Two questions:

1. Has N360 been discontinued? If so, why does Norton continue to promote its renewal, particularly at a seemingly inflated price?

2. Having purchased Internet Security Premium, I wonder if I have the same protection, utilities, etc. as I had under N360?

Thanks.