Ahh I remembered wrong they added nvdec for gp108 not nvenc, predecessor gm108 lacked both. So while true it is possible, I still doubt they would remove it on tu117 though. Nvenc has been feature on GTX gaming cards.They removed it from the GT1030, something that would have made that card very usable.
Yes, Nvidia rebranded mx100 series laptops to mx200 series, which sounds to me like there's no new entry level Turing gpu on the line up any time soon. But yeah maybe next year on 7nm EUV or even 8nm samsung mobile node.I'm betting that'll happen but likely late this year or early next.