Presumably, the final driver from the GeForce 418 driver branch will be the last to support the mobile Kepler GPUs. This news does not concern the desktop version of Kepler, those chips will continue to receive support until further notice.
Game Ready Driver upgrades, including performance enhancements, new features, and bug fixes, will be available for systems utilizing mobile Maxwell, Pascal, and Turing-series GPUs for notebooks, effective April 2019 Critical security updates will be available on systems utilizing mobile Kepler-series GPUs through April 2020. A complete list of mobile Kepler-series GPUs can be found here (insert link – will be attached list of devices).
Game Ready Driver upgrades will continue to be available for desktop Kepler, Maxwell, Pascal, Volta, and Turing-series GPUs.