John Wargo spotted an official announcement ending support for MDS Runtime. I guess if you want to keep MDS Runtime around; stick with an older BlackBerry OS!

From official RIM posting ...

End of Life for BlackBerry MDS Runtime and BlackBerry MDS Studio

Research In Motion (RIM) will end of life (EOL) the below software products and versions:
<table class="dataTable" summary="RAD End of Life Products" table="" cellspacing="0">...