I just noticed the new icon and instantly hated it with a burning passion. I upgraded around 7:30, by 9:15 I had replaced it with the old icon. I think a button would be nice to have that says, "Use old icon" so that people like me who hate change can stick with what they know.
@paecificjr Save the old icon and make a shortcut using that. I don't expect they will give an option to revert to the old icon.
FWIW, I appreciate the better visibility of the new icon under difficult background conditions - particularly when there's red behind the icon.