T-Mobile has just released a new video which gives us a quick walkthrough, highlighting a few of the features that will be available on the new myTouch 3G when it launches next month. T-Mobile seems to be focusing a lot on how the myTouch 3G can be customized to make it your own. They even show off a few custom back plates you can buy for the phone and apparently you will have the option to create your own with your personal pictures.