Magic Toolbar Appears in macOS Sierra 10.12.1
Update: It’s called the Touch Bar.
Juli Clover, for Macrumors:
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.
I assume these are used as the tutorial images for the Magic Toolbar and Apple Pay, similar to those that are included when configuring the Magic Trackpad.