M3 is a great little camera for movie capturing and it really needs magic lantern, soon.
Some months ago I was joking on this thread by saying "I am not sure if it really needs it".
In fact I was expecting that the developers would have made it quickly for this special camera.
Unfortunately things now show that it is very difficult to see anything on the horizon.
CHDK porting for M3 is not a good turn, because CHDK is mainly not for video.
In fact CHDK is a good option for point and shoot cameras that do not have many manual controls.
M3 with CHDK would be able to run some scripts for interval stills shooting: but you can do this very easily with an external remote timer and you do not need CHDK.
I would love to see the the zebras, the Kelvin white balance, time lapse videos through "fps override', the override of shutter speeds during movie capturing, the bit rate control and so many other unique features if only Magic Lantern could run on M3.