Expression BLEND help

Hi All
Can anyone please tell me,
when i had downloaded the “May-Preview” and “August-Preview” of expression Blend, it has 3 options for “New Project Type” :

  1. Standard EXE
  2. Control Library and
  3. Silverlight Application (Java Script)

But when i downloaded and upgraded with the latest version, the last option (SilverLight Application) is not there.