ESRI released version 1.1 of ArcGIS for iOS iPhone app, on 6 August 2010. It is mostly a bug-fix and performance improvement release, though a few minor feature enhancements are included as well.
From the release notes:
This workshop will focus on both the traditional aspects of field instruction that have long been a foundation of geoscience education, and the emerging opportunities to engage field instruction across the geoscience curriculum. We are looking for participants who are actively teaching in the field who can share their experience and examples of field instruction in a variety of instructional settings.