I've just finished checking that JE 4.0 works properly on Android 1.6 (it does). But even better is that we'll be shipping a je-android.jar file with 4.0 when it's available ("by the end of CY2009"). This means that JE/Android users will no longer need to copy the JE sources into a project directory in order to modify the sources to replace references to javax.transaction.xa.* with references to stub classes. Instead, they will just need to copy the je-android.jar file into their project libs directory and they'll be ready for action. The HOWTO-Android.html is a lot smaller now.
Further, DPL now works on Android. That sure made life a lot easier when getting the demos for OOW ready.
All of this willmake the entire JE/Android experience a lot simpler.