There are some very nice-looking new scans at RPGamer
Oh my... that looks phenomenal...
Definitely a must buy. Hopefully VI gets this kind of treatment too. I still have the SNES & GBA carts to enjoy, so no reason not to give a DS-ified remake a whirl.
Though really, with its art style, I think Chrono Trigger could work REALLY well with this kind of 3d remake treatment. It would adapt very nicely (even better if they used the DQ8 treatment on it and dropped it on the 360 or PS3).