OneNote is a note taking application developed by Microsoft that will be part of Microsoft Office 2013 and designed to be used with touch.
Microsoft is doubling down its focus on touch friendly applications. OneNote is their reimagining of OneNote for the desktop. There's no doubt that Windows 8 has a tablet focus so OneNote MX has been designed to work well with touch.
One of the biggest innovations that Microsoft included with OneNote is the radial menu. Tapping on buttons doesn't translate well to a touch interface so Microsoft incorporated this radial menu that has options that bloom from the center. Slide your finger to an option, let go and your selection is made. This makes editing and formatting text much easier using touch.
Notes created in OneNote will be synced with SkyDrive automatically. Users can continue editing their notes from another machine or device. Pictures can also be pulled in from social networks like Flickr and Facebook.
OneNote is a great note taking application for tablet users but desktop users will want to stick with the desktop version of OneNote.