Thanks for posting this up.
We've finally got confirmation on the first X and Y event, and it's wifi, so many people should be able to contribute.
It has also been announced for Japanese, and all NA/EU language games (English, French, German, Italian, Spanish). I don't know about Korean yet.
As they all start at the same time, it will be tough to determine how events regulate which language they are available to. My guess is that the WC (if they use WCs still) text will be in whatever language the game is set to, rather than by the cartridge's region. So it's still unknown how local events will be handled.
As I've said before, though, we definitely want people to contribute these files, but it may be some time before anyone is actually able to make use of them.
If you would like to contribute, please contribute:
The following save files (with MINIMAL changes between them, preferably ONLY the act of obtaining the event)
Before downlading the Event/Wonder Card
After downloading the Event/Wonder Card
After picking up the Event Pokemon/Item in-game
You will need a device to back up your save files from retail cartridges, btw.