Office & OneNote Tiles on HTC 8x Home Screen

Anyone else notice the New Office and OneNote Tiles on the HTC 8x Home Screens? Did I miss an announcement? I know that Office is already on WP7 but Why is there a separate OneNote Tile?

Perhaps Microsoft has some more Office tricks up its sleeve for WP8.

HTC Windows Phone 8X Hands-On (via laptopmag)