An End-of-Life notice has been posted on DevZone for BlackBerry MDS Runtime and BlackBerry MDS Studio.  The following are important milestones.

* BlackBerry MDS Runtime will not be supported on BlackBerry Smartphones running OS v4.7.1 or higher.

** BlackBerry® Plug-in for Microsoft® Visual Studio® v1.2 will continue to be supported and enhanced

Souce: http://www.berryreview.com/2009/08/24/end-of-life-notice-mds-runtime-and-mds-studio/