Okay, while I haven't installed this weeks released 2007 Office System Beta 2 yet (my PC is still busy with downloading it together with another copy of Windows Vista Beta 2), I got the word that Microsoft included the previously announced OneNote Mobile version into that Beta as well, so this is another good reason to upgrade from the previous 2007 Office Beta 1 to Beta 2.
OneNote Mobile provides a similar notes feature based on the Microsoft OneNote concept rather than the Outlook Notes concept. OneNote Mobile allows creating, editing, deleting, modifying, etc. notes as well as snapping photos which are embedded into the notes. These notes are synched with the PC later as well to be used in 2007 Office OneNote later (since I don't have it installed yet, I can not provide you a screenshot - unfortunately).
Nevertheless, it's designed to be used with Windows Mobile Smartphones rather than Windows Mobile Pocket PCs, even if it looks it installs fine on 5.0 Pocket PCs. Therefore it's not supporting digital ink input (which isn't a problem for Smartphones but doesn't makes sense for Pocket PCs, hopefully this will be enhanced with the final release). OneNote Mobile installs "automatically" (at least it prompts and asks you automatically) as soon as you've connect a Windows Mobile device to your PC, there is no stand-allone installer available yet.
Cheers ~ Arne