macOS Sierra 10.12.1, released yesterday, includes hidden Apple Pay images that depict the brand new MacBook Pro with an OLED touch panel that's set to be announced by Apple on Thursday, October 27.
In addition to confirming that such a product is in the works, the images give us our first full look at the redesigned MacBook Pro ahead of its launch. An OLED touch panel is located on top of the keyboard, where the function keys would normally be placed, and it very clearly supports Touch ID, as it is seen used with Apple Pay.

As has been rumored, the touch panel, which may be called the "Magic Toolbar," appears to be contextual, changing based on what's on the screen. In the images, Apple Pay dialog is depicted, asking a customer to confirm a purchase with a finger on the panel. It appears Touch ID is built into a nearly-invisible power button located next to the display.

http://www.macrumors.com/2016/10/25/images-of-new-macbook-pro-leaked/