Here are a few key excerpts from my experience so far with the GW3DS.
- The GW3DS indeed plays 3DS roms. (I've yet to experience any hiccups, or glitches.)
- The GW3DS plays already released scene releases. (Without patching.)
- The GW3DS saves the 3DS game saves on the 3DS' SD card. (In the form of a .sav file.)
- The GW3DS' saves are not interchangeable with those dumped from R4i Save Dongles.
- Games from other regions do not show up at all in the menu.
- In GW3DS mode, retail 3DS games do not work. You need to reboot the 3DS to play retail 3DS games.
Here are a few pictures of the GW3DS. (Boxing, plasic insert, as well as the front/back of the GW3DS red cartridge.)
The Gateway 3DS can be purchased from NDS-Card.com