A Joint Message from the IPMI Promoters (Dell, Hewlett Packard Enterprise, NEC, Intel Corporation):
No further updates to the IPMI specification are planned or should be expected. The IPMI promoters encourage equipment vendors and IT managers to consider a more modern systems management interface which can provide better security, scalability and features for existing datacenters and be supported on the requisite platforms and devices. DMTF’s Redfish standard (from dmtf.org/redfish) is an example of one such interface.
Note: the above statement applies only to the IPMI Specification, and should have no impact on existing IPMI implementations.
https://www.intel.com/content/www/us/en/servers/ipmi/ipmi-home.html
Firmware Security 