Google has a very dynamic ChromeOS team which continues to work on improving the ChromeOS experience. There is a lot of development work going on which not only improve productivity but also give early access to a lot of useful features. Chrome teams provides access to these features via beta and dev channels. You can easily enable dev (unstable) of beta channel with great ease. Just keep in mind that these are beta and dev packages and things might break once in a while; you might lose data. So if you are fine with it you can follow this simple guide to enable the dev (or beta) channel on your chrome devices.
Step #1 Click on the ‘Settings’ options.
Step #2 Go to the ‘Help’ and from under the ‘Channel’ tab click on ‘Change Channel’ option which will open a window from where you can select the ‘Developer – unstable’ channel.
Step #3 Restart the system and you will be running ChromeOS Dev channel on your device.