Announced by Elon Musk in January of 2015 was a $10 billion digital communications array that would be comprised of some 4,425 satellites.
Musk's SpaceX has filed petition papers with the US Federal Communications Commission (FCC) for permission to operate this endeavor that would envelope Earth with access to broadband, global Internet access. The papers that were filed included some technical details but had no estimation of current cost expectations or how such a mass comms on orbit system would be financed—known is that Google and Fidelity Investments have already injected about $1 billion into SpaceX.
Orbits from 714 to 823 miles above Earth are planned for the satellites; however, no launch dates have been announced or surmised, other than that an initial population of approximately 800 satellites would initiate the constellation.
The competition for such a constellation would include companies such as Boeing and OneWeb, both privately owned firms who both have designs on providing this spatial alternative for access to the Internet.