Child Account Graduation and Changing Live ID Association

In addition to the list of new dashboard features that were announced today, there are a few more that were not included in the press release that I think may be of interest to some longtime blog readers. After the update, there will be two new choices in the account management section of the dashboard:
 
The ability to change the Windows LIVE ID associated with and Xbox LIVE account.
The description pretty much says it all, but choosing this option changes the Windows Live ID associated with your Xbox LIVE account. It will also transfer all your Microsoft points to the new Windows Live ID as well. Here are some screen shots that show what this looks like in the dash.

Promote your Xbox LIVE child account to an adult account.
If you were not yet 18 when you signed up for Xbox LIVE, your account was designated a child account. Child accounts are tied to a parent's Windows Live ID to control Family Settings, and some features of Xbox LIVE are restricted. After you turn 18, (how about "Now, if you're over 18, or when you turn 18") you can promote your child account to an adult account. If you signed up for Xbox LIVE with a child account and have since turned 18, after the update you'll see a new option at the very top of the Account Management section of the dashboard. The 'Promote Child Account" will allow you to promote an Xbox LIVE account that is a child account to an adult account. This promotion removes the Family Settings and Xbox LIVE restrictions. To promote your account, you must agree again to the Xbox LIVE Terms of Use and marketing opt-ins. If a parent's credit card was on your account, you must also enter a new one to replace it. (Yes, you can use pre-paid Debit cards as well.)

Here are some screen shots that show what this looks like in the dash.

Another new feature that may be of interest to some: this update will also allow Under-18 Xbox LIVE members to now use Messenger on Xbox 360.

Edit: Clarified that Debit cards are needed to replace a parental Credit Card.

Edit: This is now available on Xbox.com.  There's an option on My Xbox > Manage Profile page called Promote Account.  LIVE users can upgrade from their child status that way.  Just like on the console, they need to supply a credit card to replace their current one.