There is a ton of work going into a Tauri based on CEF. https://github.com/tauri-apps/tauri/tree/feat/cef
My hope is this still acts like a library that multiple Tauri instances share. That would still have the upside of Tauri's shared library architecture (boo statically compiled programs, what a waste of precious ram!) while still letting us have a viable runtime. First app load might not be lightning fast but second app load is hopefully faster!! The OS webviews range from mediocre to absolute garbage; this to me would be a great improvement, that makes me happy!
A Tauri app built on CEF (Chromium) is very similar to Electron (which also uses Chromium). The key difference is that Tauri uses Rust for the application’s business logic, whereas Electron uses JavaScript.
In this case I don't know why I should use Tauri instead of Electron.