"ionic serve --lab" still serves me in the browser?

Morning I have updated the ionic to avail the ionic lab. but I could not see any changes.Still the command “ionic serve --lab” serve the app in the browser.

Have you updated Ionic CLI with this command?
sudo npm update -g ionic ?

–lab is just an parameter for the serve command.

If you read the announcement post at http://ionicframework.com/blog/ionic-lab/ you’ll see that it says:

Just like serve, it opens your app in a browser, but now it shows you what your app will look like on a phone, with both iOS and Android side by side.

@m1crdy yes Updated.

I updated the node js and updated the npm .Now I am getting the feature of ionic lab.Thanks for your support.

Hi there, ionic newbie here.
Everything is is working very well except ionic serve --lab that serves the same as ionic serve
Here’s my ionic info
Your system information:

Cordova CLI: 5.4.1
Gulp version: CLI version 3.9.0
Gulp local:
Ionic Version: 1.1.1
Ionic CLI Version: 1.7.11
Ionic App Lib Version: 0.6.5
OS: Distributor ID: Ubuntu Description: Ubuntu 14.04.2 LTS
Node Version: v0.12.9

Any hints ?
Thank you very much