I spent some time reading through the proposal for iPad, and was very relieved to see a comprehensive list of apps and programs, and solutions presented for consideration. Among them were all three of the iWork programs (Pages, Numbers and Keynote) and the iLife programs iPhote, iMovie and Garageband.
Also listed were several apps that though not created by Apple have become staples for educators. One great app I was thrilled to see make the list is Notability, which is one that we use extensively in my district.
If you are interested in seeing what Apple has proposed, here is a link to their proposal. The best part (apps they recommend, and then how they see the iPad being used in all different subject areas) starts around page 86.