Extrapolation of this direction in design indicates that the next Mac Pro could be the size of a coffee mug, battery-powered and have no connection ports other than two (2) USB-C ports. All this may come true because it's thinner, which is apparently more important than choice, functionality, and practical performance.
http://video.search.yahoo.com/video...a&sigb=13onoqtqi&hspart=mozilla&hsimp=yhs-001
That's your interpretation of their direction but the truth is that we have no idea where Apple is heading. Macbook Air wasn't very powerful either when it first came out and it lacked a ton of features people were used to having - yet now it's very popular.