Facebook presented exactly what I predicted, an Android launcher called Facebook Home.
The launcher will pe available in Google Play Store April 12.
They also presented an Android phone from HTC (HTC First) running the launcher pre-installed. The price is just $99. It's available for pre-order directly. I think that HTC has begged Facebook to delay the launcher a week so that they can sell this phone as much as possible before the Launcher is available for the other Android phones. It sounds desperate to me.
Will this make iPhone users to switch to Android. I think a lot will.