The Kindle for Kids is very interesting, does anyone know if it's still possible to install arbitrary .apk on it? I know it doesn't have Google Play (only acces

The Kindle for Kids is very interesting, does anyone know if it's still possible to install arbitrary .apk on it? I know it doesn't have Google Play (only access to Amazon's store) but if I can install .apk files from the Play store manually, then it's an instant buy.