demizer [1] filed a request to merge spl-lts [2] into spl-linux-lts [3]:

Changing the naming scheme of the package so that it reflects the supported kernel. I keep getting requests to support all kernels from one package but that would greatly complicate the PKGBUILD. I will be creating similar zfs packages for popular kernels such as zfs-linux- vfio-lts.

[1] https://aur.archlinux.org/account/demizer/ [2] https://aur.archlinux.org/pkgbase/spl-lts/ [3] https://aur.archlinux.org/pkgbase/spl-linux-lts/