New iMac with Retina display is coming!
Just see the default wallpapers folder at "/Library/Desktop Pictures" and find this:
All wallpapers have new 5120x2880 resolution and updated on 08-08-2014.
The resolution is matching with iMac 27-inch if upgrade to a Retina display (2x from 2560x1440).
Example:
Just see the default wallpapers folder at "/Library/Desktop Pictures" and find this:
All wallpapers have new 5120x2880 resolution and updated on 08-08-2014.
The resolution is matching with iMac 27-inch if upgrade to a Retina display (2x from 2560x1440).
Example: