LE 10.0 will drop Xorg support in favour of DRM/GBM which allows us to support 10+ SoC/GPU types with a single/common driver framework. The notable exception is nVidia who chose to implement their own EGL streams 'standard' which nobody else uses. There is currently very low desire among the Kodi developers to implement another proprietary code path in Kodi just for nVidia, and the current VDPAU code path is no longer developed (no 4k, no 10-bit) so there is is a genuine possibility that we stop supporting nVidia GPUs in the future. LE 9.0 will include some additional stats reporting on GPU types to help us evaluate that decision.
TL/DR .. it's probably best to avoid putting nVidia cards on your shopping list.