Found this on the TFB forum. VK Integrated Systems & Bachstein Consulting 6.8 rifle/cartridge submission for Army’s NGSW program. They've labeled the cartridge as the 6.8 Sherwood and is based on the .284 Winchester. Going big. They better develop a caseless cartridge or weight will be problem.
https://www.thefirearmblog.com/blog/2019/08/08/vk-integrated-systems-and-bachstein-consulting-submit-xr-68-to-us-armys-ngsw-programme/
https://www.thefirearmblog.com/blog/2019/08/08/vk-integrated-systems-and-bachstein-consulting-submit-xr-68-to-us-armys-ngsw-programme/