Find My iPhone is quite a useful app because even the sharpest person on the planet is going to lose track of his/her Apple iPhone every now and then; and while an update to the app includes a new icon that is inline with the iOS 7 color scheme, it apparently was sent out to iPhone users a little earlier than expected...
Source: http://www.phonearena.com/news/Update-for-Find-My-iPhone-released-before-its-time_id46670
Source: http://www.phonearena.com/news/Update-for-Find-My-iPhone-released-before-its-time_id46670