At E3, there was a slight spoiler for the next game SPOILER: The Normandy will be destroyed and will be one of the life or death moments in the game
Anyway, in the recently released PAL boxart you can see a ship in the top left corner, here is the boxart
Now here is the ship zoomed, taken from the newest wallpaper avaliable on the official website, get it from here: http://masseffect.bioware.com/media/wallpapers
I can't read what it says, but it has 2 things on the side, both of which are shorter, and it does just look sleaker, though very similar.
Here is the original Normandy: