Intel has announced upgraded Thunderbolt 3 controllers belonging to the JHL7x40 series, codenamed 'Titan Ridge'. The new controllers retain the 40 Gbps bandwidth and add support for the DisplayPort 1.4 specification.
https://www.notebookcheck.net/Intel-s-new-Titan-Ridge-Thunderbolt-3-controller-brings-support-for-DisplayPort-1-4.276906.0.html