Development on Aperture and iPhoto has come to an end, Apple said in a statement to Jim Dalrymple over at The Loop. The company plans on replacing both photo apps with Photos, an app that was briefly introduced during June's World Wide developer Conference keynote.
Here's what Apple had to say:
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. When Photos for OS X ships next year, users will be able to migrate their existing Aperture libraries to Photos for OS.
Photos App on iOS 8 Preview
What remains unclear is whether or not Photos will have the professional-level features found in Aperture. Apple's demonstration of Photos was limited, and we may not know until Yosemite and iOS 8 are released this fall.
Lastly, Apple claimed that this is a "one off" situation; Logic Pro and Final Cut Pro are in no danger of meeting a similar fate.