The support site is still there. The support site remains for all of the products.
This is the support site for the UN55B8000, but if you have a different model, it will be in the upper right hand corner in the "drop-down" boxes under "Find a Product". I can't speak on what firmware updates are available, or what they do outside of what the website describes.
Sorry about not responding. I don't have a statement or explanation. But the product is supported, warranties are still in effect, and the unit is covered as promised. I've seen a lot of conclusions drawn, and since legal threats are suggested, I can't comment further except to reassure owners that there is no danger or inherent problem with owning one of the affected Samsung televisions.
I can respond no further on this matter.