If you have installed MDT 2012 Update 1 Beta 1, you might have noticed a new wizard page in the MSI installer:
When enabled, this option enables us to collect more information about how MDT is being used, which we can leverage to improve MDT in the future. No personally-identifiable data is collected; you can read through the full details in our privacy statement that has been posted to TechNet at http://go.microsoft.com/fwlink/?LinkID=255311.
In beta releases, we are allowed to have this set to “Yes” by default, although you can choose not to join during the installation process if you wish. In the final release, “I don’t want to” will be the default. Please help us out and change it back to “Yes” so we can get as much information as possible about how MDT is being used.