UPDATE - Mounting holes plus extra hole positions added to silkscreen.
These holes will NOT get drilled in production, you have to manually add a hole from CORE parts bin and place them over circles in silkscreen where you want the actual PCB drilled.
Large circles in silkscreen are mounting holes, small circles are if you want to add holes in your PCB to press reset or see LEDs blinking.
V1.1 - Arduino Mega 2560 (Rev3)-TopMount.fzpz (135.0 KB)
Most people won't need the mounting holes, but I'm using it in a high vibration situation in a car and need the reliability of a bolted down part.