Pressing 0 twice quickly now sets the layer opacity to 0%, in the same way pressing 0 then 1 quickly sets it to 1% in Photoshop CS5. This is a great feature, initially suggested by Edward Sanchez on the Photoshop Feedback site. Shift-00 sets fill opacity to 0% Shapes are now created using their tool name. “Rectangle”, “Rounded Rectangle” and “Ellipse” are used instead of “Shape”.