roku 4 is out at end of the month
http://www.cnet.com/products/roku-4/
Roku, makers of my favorite streaming sticks, boxes and Smart TVs, has a new product to beam your favorite TV shows, movies and music from the Internet to your TV. Called the Roku 4 and shipping later in October for $129, it's the company's most-expensive box to date, and the most capable.
In addition to its squatter, wider shape, the Roku 4 differs from less-expensive Roku boxes by adding 4K video streaming capability. The 4K movies, TV shows and videos available from providers like Netflix, Amazon Instant Video, M-Go and YouTube promise better video quality compared to current HD or 1080p streams (Vudu's 4K content will also be available on the Roku 4 at launch, the first we've heard of it). To take advantage of it, you'll need a 4K TV and a fast Internet connection, and in the case of Netflix, the most-expensive subscription plan.