Update limits.mdx

Author: kathayl

src/content/docs/browser-rendering/platform/limits.mdx

@@ -71,3 +71,7 @@ If you are still running into concurrency limits you can [request a higher limit
 ### Can I increase the browser timeout?
 
 By default, a browser instance will time out after 60 seconds of inactivity. If you’d like to keep the browser open longer, you can use the [`keep_alive` option](/browser-rendering/platform/puppeteer/#keep-alive) which allows you to extend the timeout to up to 10 minutes.
+
+### Is there a maximum session duration?
+
+There is no fixed maximum lifetime for a browser session as long as it remains active. By default, a browser will close after 1 minute of inactivity, but you can [extend this inactivity window](browser-rendering/platform/limits/#can-i-increase-the-browser-timeout). Sessions will also be closed when Browser Rendering rolls out a new release.