PSA: macOS Sierra drops support for many Macs from 2007, 2008, and 2009
Ars Technica 2016-06-13

Enlarge / Older Macs like this late 2008 MacBook Pro are getting the axe in Sierra. (credit: Andrew Cunningham)
SAN FRANCISCO, Calif.—For the first time since Mountain Lion was released in 2012, a new Mac operating system release will end support for older hardware. Older Macs, mostly models from 2007, 2008, and 2009, won't run this fall's new macOS Sierra.
To run Sierra, you'll need:
- MacBook (late 2009 and later)
- iMac (late 2009 and later)
- MacBook Air (2010 and later)
- MacBook Pro (2010 and later)
- Mac Mini (2010 and later)
- Mac Pro (2010 and later)
Many of these Macs were already missing out on Yosemite and El Capitan-era features like AirDrop, Continuity, and the Metal graphics API.