Answer: Action Replay does work for the 3DS console, but as of right now (24 July 2013) no 3DS games are compatible with the Action Replay 3DS due to hacking problems. You can still use it on regular DS games but not on the current 3DS games. To sum up my answer the answer is yes and no.
Why would it. Ha, that first person who answered is cheap. Sadly, no it doesn't.
No. I tried it with my DS and it could only read Ds games like I searched for Pokemon Ruby and all I found was Pokemon Pearl, Diamond, etc. So no Ruby = no gameboy on AR
No. It has not been announced yet, but there will probably be an Action Replay for the 3DS.
yes
You need an Action Replay 3DS, other versions won't work on it - note that it is built to work on regular DS games, there isn't a device for actual 3DS games yet.
NO.
Depends if its a 3DS Action Replay or not. If it isn't then no, If it is then yes.
The original action replay nor the action replay dsi work on the 3ds. There is no current action replay for the 3ds at the moment but my thoughts are that there will be one soon.
no
No, you will need a different format of Action Replay, which will be more expensive. BUT you can use your action replay DS with it for your DS games the action replay DSi is not compatible for some odd reason -_-
No, it will not be likely for an action replay for 3DS games. This is due to the fact that this type of action is incompatible with the gaming system. However, it is compatible with the DS gaming system.
No, it does not.
No, it will not work
No. Of course the action replay doesn't
No, the 3DS will not recognise it as an authorised device.
eventually the 3DS will be hacked and R4 and action replay will come out.