Sling TV app heads to Amazon’s Fire TV with deep device discounts in tow

Sling TV has been promising an app for Amazon’s Fire TV since last month, and now it’s arrived with some big sign-up incentives. In exchange for three months of prepaid Sling TV service at $20 per month, you can either get a free Fire TV Stick (regularly $39) or $50 off the Fire TV set-top box