Lenovo's gaming brand Legion has become linked to an entry into the motherboard space. Apparently, it will kick things off in this vein with those for Intel Comet Lake and Comet Lake-S processors. This leak is based on images of boards with corresponding chipsets for both series.
https://www.notebookcheck.net/Lenovo-Legion-is-working-on-motherboards-for-Comet-Lake-S-processors.461911.0.html