This is the USS Virginia, SSN-774, set to replace the 688 & 688(i) class submarines.
I have heard rumors that the USS North Carolina & USS New hampshire (SSN 777 & 778) will have a new sail design.
The company that is making them is just finishing the 2nd in the class SSN-775 the Texas, and still has 776 hawaii to get done. How were the picture of the new sail design taken unless a 688 was built with it?