The page is still up, and AWS is obviously still running the service (and will as long as customers keep using it), but it's not linked from anywhere. Here's a list of all the AWS services (https://aws.amazon.com/products/) and it's not listed. If you look at the developer guide, it hasn't been updated in three years.

It may not be officially deprecated, but a service tat hasn't been touched in three years, which AWS will only tell you about if asked very specifically, makes me not want to use it as a foundation for any new services.