No excuses for either bringing the solution to market or just announcing it isn't going to happen. Every other modern DSLR on the market has some form of iOS/Android solution to allow viewing the Live View Screen and fire the camera. Some are better than others, many also will allow geotags to be added if the phone is in cell service.
Right now the best solution is a Surface Pro type laptop, (Macs are not really a good solution in the field since you can't remove the keyboard, and screens are not touch) and tether with C1.
Paul