These are the first photos with the Koenigsegg Agera S. They were taken in Hong Kong by Ron Alder W Photography.
Official details are scarce at the moment, but from the looks of these photos we can only assume that those are one-piece carbon fiber wheels. In a recent Koenigsegg brochure it's mentioned that the "Agera S has the look and all the features and functions of the Agera R, apart from the flex biofuel capability."
The same brochure indicates that the Agera S was developed for areas where E85 to E100 biofuels are not readily available. Instead, this version has been tweaked to provide maximum output with premium unleaded fuel (93 octane US / 98 or higher Europe and Asia). When running on premium fuel, the Agera S produces 1030 hp (768 kW) and 811 lb-ft (1100 Nm).