Today, a new version (3.2.5) of Thonny has been released. It incorporates support for Friendly-traceback (which needs to be installed separately). Currently, the download link on Thonny's homepage still links to version 3.2.4. The latest version can be found on Github.
Thonny is a fantastic IDE for beginners, especially those learning in a classroom environment, as it offers many useful tools that can be used effectively by teachers to demonstrate some programming concepts. Thonny is the work of Aivar Annamaa, who is apparently recognized as an excellent lecturer -- which does not suprise me given the thoughtful design of Thonny. He has been interviewed about Thonny on PythonPodcast.
Real Python has a fairly comprehensive review here.