I just received word from the Acekard Team that they have successfully been able to update their Acekard 2i flashcart to run on the Nintendo 3DS. However, they are not willing to release the update immediately, for the reasons below
Quote: (Acekard Team)
We won't release the patch until more testing is made. And we are also concerned Nintendo might block it so *maybe* we'll release it after the 3DS is released in US and Europe.