Passage: Sixteen months after the release of version 2.0, Microsoft skipped version 3.0 and released Microsoft Security Essentials 4.0. A public beta program started on November 18, 2011, when Microsoft sent out invitations to potential participants without announcing a version number. The first beta version was released on November 29, 2011, and the final build on 24 April 2012. Microsoft subsequently initiated a pre-release program that provides volunteers with the latest beta version and accepts feedback.

Question: What are the features of the pre-release program?
provides volunteers with the latest beta version and accepts feedback.