
This isn’t a new concept - the action bar pattern has been around on Android even before Honeycomb. In order to provide the most intuitive and consistent user experience in your apps, you should migrate your designs away from using the Menu button and toward using the action bar. Honeycomb removed the reliance on physical buttons, and introduced the ActionBar class as the standard solution to make actions from the user options immediately visible and quick to invoke. As a developer, you could use the Menu button to display whatever options were relevant to the user, often using the activity’s built-in options menu. Before Android 3.0 (Honeycomb), all Android-powered devices included a dedicated Menu button.
