Netflix announced that they are releasing a new piece of open source software that they are calling Polynote. Polynote is an IDE-inspired polyglot notebook that includes first-class Scala support, Python and SQL. Looking at the website, it appears to be built on top of Jupyter Notebook.
https://medium.com/netflix-techblog/open-sourcing-polynote-an-ide-inspired-polyglot-notebook-7f929d3f447
https://www.blog.pythonlibrary.org/2019/10/24/netflix-releases-polynote-a-polyglot-jupyter-notebook-variant/
https://polynote.org/