OpenChrome DRM drm-next-4.16 branch is now EOL (End of Life). Due to the time it took to handle Spectre and Meltdown mitigation, the DRM maintainer got additional code that would have gone into Linux 4.17 pulled in, in addition to the Linux 4.16’s DRM pull. What this means is that by the time of drm-next-4.16 branch, OpenChrome DRM has caught up with the bleeding edge of drm-next branch of DRM. OpenChrome DRM drm-next-4.17 branch will stay on Linux 4.15 rc8+ kernel for a while, but will migrate to Linux 4.16 kernel in a month or so when drm-next branch of DRM migrates to something like Linux 4.16 rc4 or rc5.