UserAgent: Mozilla/5.0 (X11; CrOS x86_64 11151.59.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.94 Safari/537.36
Platform: 11151.59.0 (Official Build) beta-channel sand

Steps to reproduce the problem:
1. Check for updates
2. your chromebook is up to date
3. update?

What is the expected behavior?
new beta version

What went wrong?
https://cros-updates-serving.appspot.com/

Did this work before? N/A 

Chrome version: 71.0.3578.94  Channel: beta
OS Version: 11151.59.0
Flash Version: 32.0.0.101 

When will there be an updated version of the beta channel for Chromebook 15 (CB515 - 1HT / 1H) codename sand. It's lagging behind the stable version.