Head up kiddos, the Sony Ericsson Xperia X10 is now officially available through AT&T.  For $149.99 and a 2-year service agreement, you can grab one for yourself and enjoy a 4-inch touch display, 1GHz Snapdragon processor, and 8.1-megapixel camera. Although it has been nearly a year since we first started hearing about this phone, it has yet to make its way to the US.  I have a feeling that if it does half as good stateside as it has for other carriers, AT&T will be pleased.  Yes, we know it’s running Android 1.6 under all that beauty, but that’s going to change by the end of the year… Isn’t that right, Sony Ericsson?