ClearPath MCP has its roots in the Burroughs MCP mainframe operating system that dates back to the 1960s.
As previously reported, Unisys has moved away from its legacy hardware designs to x86 based systems, but they still run either MCP or OS 2000 - the latter being inherited from Sperry, which merged with Burroughs in 1986 to form Unisys.
This new release of ClearPath MCP is the first time that Unisys has offered one of its flagship ClearPath operating environments independently of ClearPath Forward systems.
Two editions are offered.
ClearPath MCP Bronze uses concurrent-user-based licensing and is intended for general-purpose (production, development and testing) workloads.
ClearPath MCP Silver uses capacity-based licensing. Licenses for several workload types are available, including general-purpose, Unisys Agile Business Suite model-driven development environment, and choices for business continuity and disaster recovery.
"Virtualising the MCP environment is a major advance that brings us closer to our ultimate goal of making ClearPath Forward a linchpin in our clients' software-defined data centres," said Unisys CTO and senior vice president of technology Tarek El-Sadany.
"We remain committed to giving our ClearPath Forward clients the means to build a modern, cost-efficient hybrid IT environment flexible enough to meet their evolving challenges while building on their long-term investment in the ClearPath Forward applications that run their businesses."
The company said it still plans to offer platform-independent versions of OS 2200 at a later and still unspecified date.