The test run with a few selected users is in full swing and raises hopes that the new affordable subscription will soon be made available to all customers. However, the exact price of Spotify's Plus tier is not yet carved in stone.
https://www.notebookcheck.net/Spotify-officially-confirms-that-it-s-testing-a-new-affordable-subscription-tier-for-US-0-99-per-month.553283.0.html