Aperture

Does apple support the use pf aperture? I thought I read someplace that they did not.

Apple announced recently, that Aperture will not be further developed, and Apple stopped selling Aperture at the AppStore. So there will never be an Aperture 4. But Aperture 3.6 is still supported on MacOS X 10 Yosemite. If you already own a Yosemite compatible version, you can continue to use it. The new Photos.app even has a menu option "Add to Aperture".