When the GoPro Hero3+ was first released, many current Hero3 users did not find enough to go for the upgrade. Now if you are a serious GoPro camera user, this new firmware upgrade (only available for the Hero3+) adds more manual control over your final image and should change your mind. Here's a video showing some of the new features.
Picking out a few stand out features we now have more control over White balance including CAMRAW under Protune. The GoPro is still auto exposing, but you have options to 'limit' the ISO so that the Hero3+ does not boost gain (increase noise). While the GoPro Hero3+ attempts to auto expose the image, you have EV compensation to purposely under / over expose. Finally you have control over in camera sharpening. To make changing settings easier, make sure to download the official GoPro App.
If you think the original Hero3 will be getting the same firmware upgrade, don't hold your breathe - it might not happen. So for serious cinematographers who use the GoPro, there's no doubt all of these new features for maximum image control distance the Hero3+ from the original Hero3 enough to easily justify an upgrade. If you haven't already upgraded the firmware, check out the support page from the GoPro website (click here).
GoPro Hero3+ Camera