I don't really believe nintendo is going to block flashcards, the latest weeks nintendo and affiliates are publishing that they are going to strenghten the security of the games themself, the reason is simple (i think), not everyone is going on the internet with their ds, the only way for the flashcard blocking to work is when you are connected to the internet. Nobody has to agree with me, but thats my opinion.
It seems that everybody is getting paranoid since they blocked the last-gen flashcards...
and yes, i will propably buy a Cyclo DSi when it comes out, to add to my collection
and just another thing, the ds phat and lite are also capable to connect to the internet, why didn't nintendo block those cards back then?