I have both a 2018 Samsung QN49Q6FNA and a 2019 Samsung QN75Q90RAFXZA. The 2018 has a mezzmo app available. The 2019 does not. Is this in development? I bought the QN75Q90RAFXZA ($5000) more for streaming my own content and even the Source (DLNA) options don't work well. I'm hoping for a native app.