These are the consumer apps. These will be enabled in the evening of Friday, May 17th, 2013. If a Google App is not listed here then it is either a Core App or it is not enabled in our environment.
When you sign in to Google after this switch-over, you will be presented with a new agreement screen, regardless of whether you are using one of these apps. Learn more about the difference between Consumer Apps and Core Apps.
Please note that it is critical that you do not lie about your age if you are asked during the setup process, e.g. with Youtube or Google+. This risks disabling your access to all your applications including Gmail, and there is a complex process for re-enabling access.