This and other support announcements located here:

http://blogs.technet.com/b/configmgrteam/archive/2010/06/30/configuration-manager-support-announcements-for-june-2010.aspx

Microsoft SQL Server 2008 R2 is now supported on Configuration Manager 2007 SP1 and SP2 and Configuration Manager 2007 R2

System Center Configuration Manager 2007 SP1 and SP2 now support Microsoft SQL Server 2008 R2 as a Configuration Manager 2007 site database.  System Center Configuration Manager 2007 R2 now supports Microsoft SQL Server 2008 R2 Reporting Services.

No software updates are required.

Microsoft Application Virtualization 4.5 Service Pack 2 is now supported on Configuration Manager 2007 R2 with Configuration Manager 2007 SP2

System Center Configuration Manager 2007 R2 with System Center Configuration Manager 2007 SP2 now supports Microsoft Application Virtualization 4.5 Service Pack 2.

No software updates are required.

Hyper-V Server 2008 R2 is now supported with Configuration Manager 2007 Service Pack 2.

System Center Configuration Manager 2007 SP2 now supports client installation and all site server roles in the Hyper-V Server 2008 R2 virtualization environment.

No software updates are required.

Microsoft Windows Embedded Standard 7 is now supported on Configuration Manager 2007 SP2

System Center Configuration Manager 2007 SP2 now supports Windows Embedded 2011 as a client platform.  General limitations for managing Windows Embedded devices can be found in this article, http://technet.microsoft.com/en-us/library/bb932123.aspx,

No software updates are required.

.NET Framework 4.0 is now supported with Configuration Manager 2007 SP1 and SP2.

System Center Configuration Manager 2007 SP1 and SP2 now support the .NET Framework 4.0 with the following limitations.

• Forcing the system to use only the .NET 4.0 CLR by enabling the following registry key is not supported.

HKEY_LOCAL_MACHINESOFTWAREMicrosoft.NETFrameworkOnlyUseLatestCLR

• .NET Framework 2.0 is required to be installed on Windows XP and Windows 2003 in order for the Desired Configuration Management (DCM) feature to check compliance.

No software updates are required.

Application Compatibility Toolkit 5.6 is now supported with the Application Compatibility Toolkit Connector.

The Application Compatibility Toolkit (ACT) Connector now supports ACT 5.6.  Limitations and workarounds for upgrade issues from ACT 5.5 are documented in the following blog post:  http://blogs.technet.com/b/configmgrteam/archive/2010/06/20/act-connector-and-act-5-6.aspx

No software updates are required.