Since we can assume the first invitation is for the iPod and the second for the Macs (see pictures' name), I think it simply give a hint for the new iPod Touch or an new iPod Touch Nano (Give it a "little" "touch") and updated Macbook/MBP/MBA cases (see the 3 ray of lights, Take another "look").
you do hjave a point. but I see something a bit bigger here...