SLX-R: SLX 18r.1.00 for 9540 and 9850 has been released.

[yadavrahul]

Some fix-ups, new features, BGP EVPN VxLAN support and I also found this in the release notes:

vSLX Support* o Extreme Virtual SLX (vSLX) is a virtual lab that enables you to emulate Extreme Switching SLX 9540 and Extreme Routing SLX 9850 devices. You can also create virtual networks of workstations, SLX devices, tunnels, bridges, and probes. This is the first release of vSLX, which provides support for control plane and basic packet forwarding for L2, L3 and VXLAN based IP Fabric

[Antonio Bongiorno T…]

@yadavrahul

The SLX Switch line was acquired by Extreme Networks, please post your question on the Extreme Community located on their SLX Forum