ENGLEWOOD, Colo.--(BUSINESS WIRE)--Sling TV L.L.C., a subsidiary of DISH Network Corporation (NASDAQ: DISH), today announced that it will launch Sling TV, a live, over-the-top television service, to customers nationwide in the first quarter of 2015. Sling TV will deliver live sports, lifestyle, family, news and information channels, Video-On-Demand entertainment and the best of online video to broadband-connected devices at home and on-the-go. Priced at $20 per month, the service will require n