JupyterLab 4.2 beta is available for testing

JupyterLab 4.2 beta is available for testing. Quite a few new features:

  • Workspaces UI,
  • Recently opened/closed files,
  • Improved Shortcuts Editor,
  • Dark high contrast theme
pip install -U --pre 'jupyterlab>=4.2.0b1'
# or 
# conda install -c conda-forge/label/jupyterlab_beta -c conda-forge jupyterlab

Please report issues on Issues · jupyterlab/jupyterlab · GitHub

Changelog: JupyterLab Changelog — JupyterLab 4.2.0b1 documentation


Somehow I am having trouble with the completion.

I invoke the completion with tab as usual which works fine, also tabbing through works as expected. But the only way to select something is by clicking with the mouse. With the keyboard I can just type or press escape to close the completer.
Am I doing something wrong?

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No, that is a new bug. I opened `Enter` key does not accept a completion in 4.2.0b1 · Issue #16150 · jupyterlab/jupyterlab · GitHub. Thank you for testing the beta!

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The Notebook 7.2.0 beta is now also available: Release v7.2.0b0 · jupyter/notebook · GitHub