ember-cordova 1.0 has now been released. In reality the library has been stable for some time, and we should have implemented the 1.x tag months ago.
The biggest announcement is that ember-cordova can now be fully used in Glimmer projects. Functionality is exactly the same:
ember install ember-cordova #adds ember-cordova to a glimmer project ember cdv:build #builds a glimmer/cordova app ember cdv:s #creates an app container pointed to a livereload instance
As always, you can keep on top of release notes on the Github releases page: https://github.com/isleofcode/ember-cordova/releases