Alongside the announcement of its 2017 ThinkPad-family, Lenovo also announced some new Think-branded accessories: Two external monitors and two new dockingstations. Their common trait: All of them are connected to the laptop via USB Type C or Thunderbolt 3.
http://www.notebookcheck.net/Lenovo-New-ThinkPad-accessoires-with-USB-Type-C.188937.0.html