Currently the most widely used version of InputMapper considered feature complete, however is being phased out in favor of InputMapper 1.7 which is more modern and stable and has less issues with Windows 10 and exclusive mode.
Sony's German Playstation blog has announced 2 new officially licensed PS4 controllers; the Razer Raiju and the Nacon Revolution, and they look sweeeet!
Quick discussion and demonstration showing off the Dualshock API that will help with the upgrades that IM is undergoing from the hardware interaction side
Demo of some of the new functionality you can expect from InputMapper when adjusting your stick and axes configuration, including independent control of positive and negitive side of the axis.
In Steam's recent developer conference, they announced the addition of support of new controllers to the Steam API, one of which being the Dualshock 4. As usual though the hype train took off before people stopped to read the destination.