VMware is announcing discontinuation of its third party virtual switch (vSwitch) program, and plans to deprecate the VMware vSphere APIs used by third party switches in the release following vSphere 6.5 Update 1. Subsequent vSphere versions will have the third party vSwitch APIs completely removed and third party vSwitches will no longer work.
This has no impact on existing use of 3rd party vSwitch on supported vSphere release.
The 3rd party switch APIs will work and be supported up to vSphere 6.5 Update 1.
VMware recommends migrating from third party distributed vSwitches including Cisco Nexus 1000V, Cisco VM-FEX, HPE 5900v and IBM DVS 5000v to vSphere Distributed Switch.
Details are on VMware