The version number is displayed on the main menu, bottom right. Let me know if you can not find and I will provide a screenshot. :)

Strange question perhaps but do you even patch games in stadia? You are streaming it so you shouldn't be doing that anyways right? It's whatever the servers hosting the software do to update... Maybe they have specific times they look for updates in a day or week? Only an admin on the workstation you are streaming from probably can do that? I know in IT that's how it would work if you were working from a cloud but I don't know exactly how Stadia goes about this stuff.

Yeah we don't update it. It's up to the developer to push the update to the platform, like anything else.

There's been a bad history of developers just not updating their games on Stadia, so I wanted to know if we were actually getting the updates they're posting about.