So, a slight bump to the existing machines and a promise for a fully revamped one next year.
I have the most recentish Mac Pro. It's a fantastic machine, I wish it had sold better, but perhaps the proliferation of iDevices and laptops more or less killed it except for special niches :/
https://news.ycombinator.com/item?id=14031619
Daring Fireball "The Mac Pro Lives":
http://daringfireball.net/2017/04/the_mac_pro_lives