repo2docker will be soon upgrading from JupyterLab 3 (has reached end of maintenance this month) to JupyterLab 4.
Affected users:
-
If you are using JupyterLab extensions, some JupyterLab extensions may need updating
-
Since JupyterLab 4 requires Python 3.8, the Python 3.7 environment will continue to be on JupyterLab 3, but will not receive further updates. The next time the 3.7 environment requires updates, it will likely shift to kernel-only support, as we currently handle Python 3.6 and below.
-
[MRG] Update to JupyterLab 4 by jtpio · Pull Request #1340 · jupyterhub/repo2docker · GitHub
There will be another more significant upgrade to Jupyter Server 2 and notebook 7, as well, after this has completed: Update to JupyterLab 4 and Notebook 7 by jtpio · Pull Request #1302 · jupyterhub/repo2docker · GitHub