Microsoft has announced System Center Configuration Manager 2007 R3. The biggest new feature by far in  the introduction of advanced power management capabilities.

There are a few areas of focus for ConfigMgr R3, with the main engineering effort concentrating on Power Management.  Here are the goals for this feature:

Power Management
The goal of this capability is to enable Configuration Manager to further reduce the operational costs of IT by providing basic power management features native to the product.  Our approach is based on 3 primary areas:

A. Help the organization plan a power strategy by monitoring current power state and consumptions and reporting on machine utilization trends, current power settings and current energy consumption

B. Enable the Administrator to easily create, deploy and enforce specific power settings using the existing ConfigMgr infrastructure 
   −Ability to set peak and non-peak schedules
   −Ability to remediate settings if changed
   −Ability to opt out machines from power policy

C. Provide the business meaningful report formats that are relevant to Power Management

An effective approach to power management needs to maximize power policy deployment while minimizing the impact to the end-user. System Center Configuration Manager helps customers further reduce their operational costs by adding new in box capability to their ConfigMgr infrastructure, and by seamlessly enabling power management client agent services to their existing Collection landscape.

In addition to power management, ConfigMgr R3 will provide customers with enhanced scale and performance support above current numbers.  In addition, further capabilities – in time for your Window 7 deployments – around Operating System Deployment will be enabled.

Source: http://blogs.technet.com/systemcenter/archive/2009/09/08/announcing-system-center-configuration-manager-2007-r3.aspx