Sorry for the bad news, but I don't believe that Honda will release CarPlay upgrade for 2015or 2016 CR-Vs.
I too was frustrated with Honda slow release of CarPlay to their vehicles. After hearing about the 2015 CR-V beta, I expected that CarPlay would be supported on the 2016 CR-V and possibly the 2015 with a USB update. However, after purchasing a new 2016 Accord EX with CarPlay, I now believe that Honda will wait on CR-V support for CarPlay until 2017 re-designed models.
On the 2016 Accord EX, the LaneWatch feature displays on the upper display screen, while CarPlay remains uninterrupted on the lower touchscreen. On the 2015/2016 Honda CR-V, the lower screen has dual purpose of touchscreen and for LaneWatch - causing interruptions while using the touchscreen or even Siri HandsFree when the right turn signal is turned on and activates LaneWatch. I suspect that this dual purpose lower screen interruption is the hardware issue that prevents Honda from publically releasing CarPlay on the 2015/2016 CR-V.