Facebook Messanger

Facebook app also updated to prep for Facebook Home's launch today

Facebook this morning has rolled out an update to its Facebook Messenger app -- and "chat heads" are now live! These are the little persistent notifications that you get when someone messages you. Tap it to open and reply. You can move it around on the screen, but it'll remain docked to an edge. To get rid of it, just press, hold and toss to the bottom of the screen.

If you use Facebook Messenger but hate chat heads, there's an option in the settings to turn them off when you're using other apps, so they won't just float on your screen.

The Facebook application itself also has gotten an update this morning, in preparation for Facebook Home. (Some bugs were also squashed, according to the new changelog.)

We're expecting Facebook Home (the launcher) to go live anytime now.