Is anyone able to implement the ics action bar or tabs into v2.0 as a plugin (for android)? http://actionbarsherlock.com/ have the source code and stuff ready, but I don't much about how to implement it in buzztouch v2.0

This would NOT be a plugin. Plugins are used to create new screen types. The navigation bar, or an Action Bar is used to control navigation across multiple screens. There are all sorts of ways to make Action Bars and none of them are trivial. In order to do this, you'll end up modifying the code that creates the Navigation Bar. The navigation bar is setup in the BT_ViewUtilities.java file in your project. All of the screens use the same method to make the nav bar so you could start by looking at the method and getting an understanding of how it works. Once you understand how the nav bar is being made, you could to try implement an Action Bar