We tried AltPizza's new branch at 117 East Coast Road (opp I12 Katong). From the ground level, it seems like a smaller branch to the one at Suntec City.
But . . . if you head towards the picture with the girl on the wall, turn right, and you will see that there are stairs leading up to the second storey, where there a more seats.
Nothing is different at this branch. Same great food, great pizzas and good service!