Here's a story on Playbook and Android. Basically an Android emulator will be running on the Playbook.
http://www.zdnet.com/blog/perlow/bla...progress/19118
"Additionally, RIM has enabled a security mode that disables support for APK application side-loading, obviously so that their own BlackBerry App Store monetization cannot be bypassed by say, Amazon or even Google."
No thanks.