How can I tell when the next update is out?

Stupid question, but a lot of the time I see “unstable branch released”, that’s usually all I see, so i was wondering when the stable branch is released and automatically updated to, How can I tell when that happens?

We’ll be updating the stable branch pretty soon. When we do that, we’ll post an announcement here and on Steam, and unless you opted out of auto updates, Steam will automatically download the new version for you.