Ice Cream Sandwich (ICS) will have one major improvement over Honeycomb (Android 3.0) It will be able to support all sizes of screens, medium, small, and large. Moving forward the same version of Android will run on all screen sizes.
Honeycomb apps makers have developed apps that are specifically for large screen. This way of thinking will have to change with ICS. New apps will be forward-compatible meaning that they will be able to run on any device using ICS.
You may be asking, what should I do if I developed an app for Honeycomb? Well you have two options. First you can not permit installation on smaller screens or support smaller screens with the same APK.
Configuring Honeycomb app for handsets
For those developers that want their app to work on all sizes of screens you need to update your Honeycomb app so that it functions correctly on smaller screens as well as on large screens.
By making your apps work on handsets you will be able to have a wider base of users. It may not be easy to design your apps so they fit all screen sizes. Additionally if you use one APK for all devices you will be able to update and publish apps more easily.
Below are two things you can do to adapt your Honeycomb app for handsets:
Fragments are the key to building a design that can be used in multiple combinations
Don’t make your Action Bar too complex so every system can change itself to fit the layout
via Android Developers
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