The Legion Y540 is coming next month while the Legion Y740 will launch in May when Intel is expected to ship its successor to Coffee Lake-H. The Legion Y7000 offshoot, however, is nowhere to be found with no comments from Lenovo about its current whereabouts.
https://www.notebookcheck.net/The-Legion-Y7000-is-curiously-absent-from-Lenovo-s-GeForce-RTX-lineup.400246.0.html