Mozilla have released a extension for people to taste the Firefox OS on firefox browser. Fennec Fabric build an app for adnrdoi users.
Lock
Look, the rocket. >_<
Desktop
If you want to go back to android, you need to use your finger to swipe down, because there is no home button
Animation
Setting
It is similar to android os or ios.
Market Place
I did not open the market successfully, it takes me more than 5~7 seconds, so I close it.
In Fact It Is An Android App
Id did not run very smoothly, when I finished the test, I just uninstall the app. It just like a laucher for android.
Whether firefox will success and I really like the open source os like firefox os. But I think every os which want to imitate android will fail.