According to their Github page, they _are_ linuxcontainers (in a way), and Incus is Apache licensed:
Incus, which is named after the Cumulonimbus incus or anvil cloud started as a community fork of Canonical's LXD following Canonical's takeover of the LXD project from the Linux Containers community.
The project was then adopted by the Linux Containers community, taking back the spot left empty by LXD's departure.
Incus is a true open source community project, free of any CLA and remains released under the Apache 2.0 license. It's maintained by the same team of developers that first created LXD.
LXD users wishing to migrate to Incus can easily do so through a migration tool called lxd-to-incus.
Incus, which is named after the Cumulonimbus incus or anvil cloud started as a community fork of Canonical's LXD following Canonical's takeover of the LXD project from the Linux Containers community.
The project was then adopted by the Linux Containers community, taking back the spot left empty by LXD's departure.
Incus is a true open source community project, free of any CLA and remains released under the Apache 2.0 license. It's maintained by the same team of developers that first created LXD.
LXD users wishing to migrate to Incus can easily do so through a migration tool called lxd-to-incus.
https://github.com/lxc/incus