Eight months after version 1.0 was originally released, Red Hat has released Red Hat Enterprise MRG 1.1, its Linux platform for time-critical applications. The Grid capabilities in the 1.0 release were still experimental. However, Red Hat says that they are now fit for use in production environments. MRG stands for Messaging, Realtime, and Grid.

Red Hat Enterprise MRG 1.1 promises improvements in the following areas: Native OFED Infiniband Support and RDMA (Remote Direct Memory Access) help to provide for better Messaging latency ratios and Active-Active clustering is also new in the release. The tools in the Messaging and Grid components of MRG have been revised and updated and the Grid component now includes support for cloud-based environments, such as EC2 from Amazon.

While Red Hat Enterprise MRG is optimized for Red Hat Enterprise Linux (RHEL), the system can also run under Windows or Solaris, although components like Grid scheduler, or the real-time abilities, are only available when running a Linux kernel.