Aperture 3 has over 200 new features which includes: Face recognition with Faces. Sorting by location using Places. Brushes for image adjustment. Sorting in Projects. Adjustments Presets for easy effects. 15 Quick Brushes. Slideshow improvements.
Aperture 3 now supports 64-bit for Intel Core 2 Duo under Snow Leopard.
Apple also released some video tutorials for Aperture 3.
Via: The Mac Observer.
Arabic version of this post on SaudiMac.net.