Seems unlikely
Pretty sure Nutanix are a software company and don't give a damn what hardware their software goes on. As long as the kit sits on some HCL they stuff profit most from licensing and support.
Cisco on the otherhand, are going to make a big push with HyperFlex..no way they'd dilute that by allowing their primary competitor (in the HCIA space) chuck their dirty code on their boxen.
Two pence offered