So Facebook Home is coming to Android phones. But just the good Android phones. The HTC One X, HTC One X+, Samsung Galaxy S III, Note II, and the new HTC One, Samsung Galaxy S4, and HTC First for now. That's it, that's the list. If your phone is more than a year old, no Facebook Home for you. And that's how it has to be, really.
The ideas that power Facebook Home make sense in a lot of ways. Chat heads, the perpetual overlay of your messages as a separate layer on top of other apps, are a good example of how Facebook Home operates. Leave everything at your fingertips, more or less, and let you get at them without interrupting what you're doing. It's smart! It's also likely very, very resource heavy, since you're basically asking your phone to do whatever it's doing, plus use chat heads.