Although most Apple MacBook Pro-related rumors we keep hearing these days involve a 16-inch model, the model A2159 that was recently spotted on the website of the FCC seems to be an update 13-inch model. Since Apple still has to update the 13-inch MacBook Pro without a Touch Bar, this is what the aforementioned model could be.
https://www.notebookcheck.net/Apple-MacBook-Pro-A2159-gets-certified-most-likely-an-updated-13-inch-model-without-Touch-Bar.428500.0.html