A: No. The DS is discontinued, and Nintendo no longer produces DS cartridges. The only official portable Minecraft versions are on 3DS (discontinued digitally), Switch, and mobile.
For those who want a "legitimate" portable Minecraft experience on Nintendo hardware, the Nintendo 3DS is the answer. nintendo ds minecraft rom
The Minecraft: New Nintendo 3DS Edition is an official release designed for the 3DS family. It features: A: No
If you own a 3DS (or a 2DS), this is the superior way to play. While the New Nintendo 3DS Edition is no longer receiving updates and is missing features found in the modern Bedrock edition (like infinite worlds and The End dimension), it is a fully realized game compared to the DS homebrew experiments. For those who want a "legitimate" portable Minecraft
A: No. The homebrew versions have no online or local multiplayer.