After a couple of months of hard work, JupyterLab 3.0 is finally released! 
Many many thanks to everyone involved from the Jupyter community for making this happen, and for providing feedback and helping with issues!
Highlights
- The visual debugger is shipped by default
- Support for multiple display languages like Chinese and French
- The table of content for notebooks is shipped by default
- Improved extension system: faster installs and no extra installation step or JupyterLab rebuild needed!
Check out the announcement blog post:
https://blog.jupyter.org/jupyterlab-3-0-is-out-4f58385e25bb
Like and retweet the announcement tweet:
Try it out on Binder:
Thanks!