"The Only Thing That Is Constant Is Change." That's a famous quote by the pre-Socratic Greek philosopher Heraclitus. Nobody knew it at the time, but he had been sent back from the future and was actually making a snarky comment about Google's approach to design. It was only about two years ago when every app was adding FABs (floating action buttons) regardless of how much or little they made sense, and now we're saying an abrupt goodbye to the one in Android Messages as it vanishes with the latest update. Alongside that simple change, a teardown also turns up signs that the app will soon provide shortcuts to launch video calls, exchange money with contacts, and read QR codes.