The Defense industry brought us Earned Value and proved that Critical Chain could work. Now the DoD commissioned the Institute for Defense Analysis (IDA) to test a new cost control theory called RACM (Risk Analysis and Cost Management).
The results of the study showed that RACM can offer significant reduction in project costs and excellent cost performance management. RACM offers a method to determine and manage an appropriate risk reserve level (much like Critical Chain focuses on buffer management for schedule control). It also uses a risk multiplier (called Ps or "Probability of Success") for costs at the WBS element level.
But RACM is not being positioned as a replacement for Earned Value Management. Instead, it can be used to complement EVM.
For more info, see the website for RACM, Inc. They also offer a 60-day Evaluation Beta Model.
RACM Home Page