Nothing will be changing on Digital-Tutors for the foreseeable future outside of being a Pluralsight company. New subscription plans are now available through the website.
For website, log-in and video issues, contact the support team on the website where you are experiencing the issue.
For account, billing or subscription issues, contact the support team on the site you purchased or want to purchase the account.
Digital-Tutors support: http://www.digitaltutors.com/11/help.php
Pluralsight support: http://support.pluralsight.com/