Rumor: Nintendo Switch Will Support Micro SDXC Cards Up To 128GB In Capacity

[Pyro as Bill]

Faelco said:

Pyro as Bill said:
DLC could be added to the cartridge, no?

I'm not sure, but I remember someone explaining in another thread that the cartridges would most likely be read-only...

That would make sense for piracy protection but I'm pretty certain they can be read/write if Nintendo chooses.