The Chrome OS Beta Channel, the last step before a new build of the platform arrives to the masses, has been updated with its fourth Chrome 68 based build today. Build 68.0.3440.59 (Platform version: 10718.50.0) is in the process of rolling out to the majority of devices registered in the channel and should be available today. As always, you can check for the new update manually by typing chrome://help in the browser bar and then clicking the Check for update button. This fourth update comes two full weeks after the previous update, a unusually long period of time during the beta cycles.