I didn't want to stir the pot and create more divide between the pre 2017 and 2017 model owners, but I suppose we can have a decent conversation here without anyone getting offended.
The 7.8 0-60 time for the 2017 CX-5 on Car and Drive is for a FWD model. If you look at their data for a 2016 CX-5 AWD that they tested, it has a 7.7 second 0-60 time and is faster in every performance metric compared to the 2017 FWD model. So basically, the 2016 AWD model, which is slower than a 2016 FWD model, is still faster than a 2017 FWD model. Not sure what happened, maybe it is the extra weight or the new tires, but the new model is just a bit slower than the 2016 models.
Now again, I think the new features available in the 2017 models, more than makes up for the slight loss in performance for the new CX-5. However I would like to see Mazda work on it and get it back up to speed at least compared to the 2016 models. Not to mention that the other competitors are stepping up their game. If anyone checked out the new MotorTrend comparison test, they couldn't even recommend the CX-5 because a certain competitor has caught up as far as driving dynamics/performance goes.
Edit: It always used to be, that they would recommend the CX-5 because it was a better driving car. Sadly that is not the case for 2017.