updated 03:04 pm EDT, Fri July 25, 2014
App to be discontinued
Beginning with iOS 8 beta 4, Apple is warning owners of iPhoto for iOS that some features may not make the transition to its replacement, at least at first. Much as with iPhoto on the Mac, users will eventually be migrated over to an all-new, native Photos app, a huge overhaul of the existing iOS Photos app. When trying to run iPhoto in the current beta of iOS 8, an error message now appears stating that iPhoto isn't supported; instead, people are offered the choice to migrate data to Photos, with the exception of "layouts and text added to Books, Journals and Slideshows."
A "Learn More" button is also present, but non-functional at present. The message's frequency isn't consistent; in some cases, testers are still seeing a more generic "iPhoto is not supported on iOS 8" without any options. Migration was actually introduced in the first iOS 8 beta, but was non-optional at the time, and missing any indications of what would change in the process. Apple has previously said that Photos on the Mac would use a similar library structure to the existing iPhoto and Aperture libraries, but this may not apply to the iOS version.
Apple may be abandoning complex printing and presentation features for its photo apps, at least on iOS, though the features could conceivably reappear in future editions (as happened with a number of features in Pages, Numbers and Keynote). It discontinued its Cards app some time ago, and the photo world in general has become increasingly digital-only.
In many cases, photos are shot exclusively for sharing on social networks, making things like books and journals irrelevant. There remain plenty of third-party printing services that can use pictures from iOS or the Mac to lay out and create books, calendars, and other printed material, but the loss of the slideshow feature -- even temporarily -- in a revamped Photos would likely anger some users.