So, apart from the regular updates we've been working behind the scenes to provide access to the FAA raster charts.(Sectional, TAC, WAC, and IFR Enroute) We plan to provide WMS(Web Map Server) access so that various third party software products can use our service to download tiled maps to devices. We've been testing with the Mobile Atlas Creator(MOBAC) with encouraging results. We hope to have this available to the public within the next month or so. Due to the large data sizes and heavy compute requirements this will be a for-pay service with a monthly fee(below $5/mo).
For anyone who writes map display software we'd be happy to discuss access/licensing for your customers.