You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
NotebooksArea: what it touches
ImprovementsKind: in v2.1.227,
ImprovementsSection of the release
What
NotebookRead checks the file before opening it and refuses anything larger than 104857600 bytes, suggesting you slice it with jq or PowerShell instead. NotebookEdit refuses an edit that would push the notebook past the same limit and leaves the file untouched.
Details
Non-regular files (devices, FIFOs, sockets) are rejected outright.
A structural check now rejects files that are not real notebooks: the top-level cells must be an array of cell objects each with a string or string-array source.
Evidence
Notebook file is not a valid Jupyter notebook (top-level "cells" must be an array of cell objects, each with a string or string-array "source").
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
