According to the App Store, version 2.1 is out with the following improvements:
brightness control
option to permanently delete samples from within the app
two page view
speed improvements when synchronizing purchases, bookmarks, highlights and notes
improved periodical support
minor bug fixes
Wrong headline…iPAd app updated, not iPhone…speaking of which, will we get access to Fictionwise & EReader books when they eventually DO get the iPhone app updated? Prbably not. Many more iPhones than iPads out there, why iPad update first? Weird!