@Soren Bingo!
They would have to be stupid to go with 32 GB of internal storage. I fear the only SD card slot they're going to offer is one that fits their proprietary cartridge.
We will have to wait and see, but until then SMDH that we even have to go through this discussion in 2016.
UPDATE: I'm also coming to the sad realization that the latest Pokemon game for 3DS is NOT even compatible with this thing. Any further support for the 3DS will have no benefit to this new hybrid portable, meaning basically that this thing has to wait for some brand new Pokemon title...
Why are they going the route of a proprietary SD cartridge? Are we still THAT worried about game piracy?....
The Wii, Wii U, and 3DS all have SD support and the 3DS has that for game storage. I am fairly certain Nintendo has to allow for removable storage for a portable system with console level complexities. You shouldn't need to install the retail games physical game since the speed of the read/write cartridge should be a nominal difference from the internal memory. eShop games are a different deal and are going to require more than 32GB. Infinite Warfare won't fit on 32GB and Nintendo is not that daft.
There absolutely with be both SD cards and Game Cards on the tablet. 100%
@Agent-x I think (hope) nintendo ships all games on 64GB cards and level a partition on every cart for the updates and patches and DLC. I think this optimizes both performance and barratry life.