Oh.
My bad.
Afaik, no.
Supercard Team has a long support for their products.
The SCSD (a GBA flashcard) recently got a new update back in 2010 iirc.
The DSTwo is their flagship flashcard, their pretty proud of it so they won't let it die that quickly.
Besides, if the card did die, I'm sure some hacker will figure out how to run a custom kernel on it.
However, that might also not happen due to the 3DS being close to having it's own flashcard (and progress from then on will continue)
But in short.
Yes the DSTwo is the perfect DS flashcard there is.
SNES/GBA emulator (along with all the other older systems that can also run on other cards)
Videoplayer that works pretty good.
Pretty much the only FC out there that ran Pokemon black & white from the day it got dumped (same with B/W2)