Good morning and welcome to the beginning of the Android ‘Land-grab’. Some useful tools:
1. OpenNCF has published their sdk for andorid and an android add on at:
http://sourceforge.net/projects/open-nfc/files/
2. The AppInventor site went live:
http://appinventor.googlelabs.com/about/
Its a visual programming tool to develop android applications.
3. OpenFrameworks has released an android version for NDK development:
http://www.openframeworks.cc/setup/android-eclipse
4. Mark Murphy has released an Android Jar library tool called AndParcel that makes it easier for Androdi Jar Library deployment for those who do not use the Eclipse IDE and Gogle ADT combination at: