What is next 4k tv stick?

As an AI language model, I do not have access to future product releases or announcements. However, I can provide some general information about 4K TV sticks. 4K TV sticks (also known as streaming devices) are small, portable devices that plug into a TV's HDMI port and connect to the internet, allowing access to streaming services such as Netflix, Hulu, and Amazon Prime Video. They offer up to 4K resolution video playback and some models also support HDR (high dynamic range) content. Some popular 4K TV sticks include the Amazon Fire TV Stick 4K, Roku Streaming Stick+ 4K, and Google Chromecast with Google TV. These devices are usually affordable and provide a convenient way to access streaming content on a TV without needing a separate streaming box or Smart TV.