There's an updated version of Microsoft's OneNote electronic note-taking application available in the Apple store, as of December 12.
The new 1.3 OneNote update advertises itself as being available for not just for the iPhone, but also the iPad. It seems the iPad version isn't really available yet, despite the wording, however.
Microsoft delivered an iPhone version of OneNote in January 2011. While it worked on the IPad, it wasn't optimized for it.
The new 1.3 update includes general performance and reliability updates, as well as support for Tables in notebooks, according to the blurb on the iTunes store entry. "Microsoft OneNote for iPad is now available; download it from the iTunes App Store," the same blurb says.
Another seeming change with the 1.3 release: The new update is free for up to 500 created/edited notes. After that point, users are advised to move to either the free OneNote Web App (the Webified version of OneNote) or to pay $4.99 for an unlimited version of the OneNote for iPhone app.
I've asked Microsoft officials if and when they expect OneNote for the iPad to be available for download. No word back so far.