[lostbean]

Tilt works as an in-place hot-reload tool for containers. However, because it performs in-place updates, it doesn't support running multiple parallel and isolated versions of your cluster side-by-side.

That said, the timing of your question is perfect since we are about to push a Tilt integration that allows you to create an isolation flow and use Tilt to hot-reload and update that flow in-place! :)