We've heard you loud and clear - 16x10 resolutions are a hot commodity. We originally kept them out because they were causing a number of issues with the game, but hey it IS Early Access, right? To that end we'll be implementing several 16x10 resolutions with our first Patch. The date of that Patch is TBD as we'd obviously like to pack in a number of improvements, but they will be coming and soon!
You all are likely to have preferences, so please respond here with your most desired resolutions and we'll do our best to support them.