Not according to this:
NVIDIA Turing/Volta/Ampere update
In the previous update, we said that the future of the nvidia-closed image powering Nvidia GPUs up to ~GTX 1000 series was uncertain. Well, it is not uncertain anymore, it is here to stay!
For more context, in around one month, the Nvidia 590 driver releases, which drops support for those cards, and as we previously could only offer the last Nvidia driver version in our images, this made its future uncertain. However, powered by our new kernel build process, which features dual Nvidia driver modules and a new nvidia-drivers mirror (thanks Antheas), we will be able to offer the last driver to support these cards (580) on the -closed builds indefinitely! This driver is an LTS release and will be supported for the next three years, so you will enjoy security fixes for this period of time as well.