Yes, but pretty much in the same sad state as they were a few years ago. We're running a few in production and next time we touch it we're replacing them with Windows Server Core EC2 instances built from baked images.
Note on Linux containers:
Running Linux containers on Windows requires the use of LinuxKit or WSL. Docker Desktop for Windows requires you switch modes between Linux container mode and Windows container mode as you can't run both simultaneously. A workaround is to install an additional Docker daemon inside the WSL environment. Most people are going to install Docker Desktop and use WSL in Linux mode. It's fine. Hopefully my facts are up-to-date.
I thought Windows containers never went anywhere. Interesting to hear that they are still a thing.