What probably matters to youSection of the release
What
The whiteboard tool description was rewritten from a one-way board you sketch on for Claude to plan from, into a shared canvas: you publish, the session wakes, reads the scene data plus a picture of the board, and answers by drawing back on the same canvas.
Details
Still only creates a new whiteboard; existing ones are read through their published artifact.
This is a description change, so it takes effect anywhere the whiteboard tool is already available.
Evidence
Create a whiteboard artifact - a shared sketch canvas for wireframe-fidelity diagrams
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
