“With the introduction of the new Photos app and iCloud Photo Library, enabling you to safely store all of your photos in iCloud and access them from anywhere, there will be no new development of Aperture,” Apple said in a statement to The Loop. “When Photos for OS X ships next year, users will be able to migrate their existing Aperture libraries to Photos for OS.”
The new Photos app, which will debut with OS X Yosemite when it launches this fall, will also replace iPhoto. It promises to be more intuitive and user friendly, but as such, likely not as full featured as what Aperture currently offers."
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