Apple updates iMac line with 4K and 5K Retina Displays, adds Force Touch enabled trackpad
Tuesday, October 13, 2015 at 8:32AM 
Apple's updated the iMac line to now include 4K Retina Displays on the smaller 21-inch model while offering 5K Retina Displays across the 27-inch iMac line.
The 27-inch iMac with Retina 5K display is available today n three models starting at $2,299 (CAD), $2,599 (CAD) and $2,999 (CAD). These larger iMacs come with 6th generation Intel Core processors (Skylake).
The 21.5-inch iMac is available today in three models starting at $1,399 (CAD) and $1,649 (CAD) and with a Retina 4K display starting at $1,899 (CAD). The smaller iMacs come with 5th Generation Intel Core processors. The advantage of 4K and 5K Retina displays is the ability to edit 4K video while still having additional screen space for editing tools.
The new iPhone 6S and iPhone 6S Plus smartphones can now capture 4K video, so it makes sense to have them viewable on Apple's most popular desktop models.