I do my best to ensure that everything is compressed as tightly as possible to keep file sizes down, and so far everything's still on track to keep the APK size below 2GB for the final release - but I'm watching it like a hawk :P
In the worst case scenario I will just have to tighten the compression screws on the Android version, resulting in slightly lower graphical fidelity (though it shouldn't be noticeable on most screens). But we'll cross that bridge if and when we come to it :)