This functionality is in beta and is subject to change. The design and code is less mature than official GA features and is being provided as-is with no warranties. Beta features are not subject to the support SLA of official GA features.
Congratulations on finding the Canvas application in Kibana. You are in for a treat. Canvas is a whole new way of making data look amazing. Canvas combines data with colors, shapes, text, and your own imagination to bring dynamic, multi-page, pixel-perfect, data displays to screens large and small.
We made Canvas for people like us. We figure, you are probably people like us: you make neat stuff and you want to show that neat stuff to others. Canvas is for makers who are a little bit creative, a little bit technical, and whole lot of curious.
We’ve put together this Getting Started to get you up and running with Canvas.