Apple has announced that they are working on a "completely rethought" Mac Pro:

Apple Says Mac Mini is 'Important' But Remains Tight-Lipped About Future Updates
Apple Updates Mac Pro, Says All-New Model With Apple-Branded Pro Displays Coming Beyond 2017

Apple Says Mac Mini is 'Important' But Remains Tight-Lipped About Future Updates

Apple today introduced spec-bumped versions of the current Mac Pro, and revealed that it's working on a "completely rethought" Mac Pro alongside Apple-branded pro displays that will launch beyond 2017. However, Apple remained tight lipped about the Mac mini, beyond noting that it's an "important" product in its lineup.

pple marketing chief Phil Schiller via Daring Fireball:"On that I'll say the Mac Mini is an important product in our lineup and we weren't bringing it up because it's more of a mix of consumer with some pro use. … The Mac Mini remains a product in our lineup, but nothing more to say about it today."

Read full article @ MacRumors

Apple Updates Mac Pro, Says All-New Model With Apple-Branded Pro Displays Coming Beyond 2017

Apple today introduced spec-bumped versions of the current Mac Pro, marking the first updates to Apple's pro-oriented desktop computer in over three years. Apple also confirmed it is working on a "completely rethought" Mac Pro with Apple-branded pro displays that will launch at some point beyond this year.

The existing Quad-Core model with dual AMD FirePro D300 GPUs is now 6-Cores with dual D500 GPUs and 16GB of RAM for 2,999, while the 6-Core model with dual AMD FirePro D500 GPUs is now 8-Cores with dual D700 GPUs and 16GB of RAM for 3,999. There remain no Thunderbolt 3 ports or any other hardware changes.

Read full article @ MacRumors