There has been tons of misinformation, however, I can confirm that Pokemon Y does work.
I tested:
* SpotPass
* Battles
* Mistery Gift
* GTS searching
* Trading
* O-Powers
EVERYTHING works perfectly, there's no problem at all.
Here's what I'm using:
3DS XL FW4.5 + Classic Emunand FW6.3
Gateway firmware version = 2.0B1.
Also, as a side note, other eshop titles work too:
* MK7 (had it before emunand) works online and can be redownloaded.
* Phoenix Wright DD in-game DLC shop works too (bought the DLC).
I tested:
* SpotPass
* Battles
* Mistery Gift
* GTS searching
* Trading
* O-Powers
EVERYTHING works perfectly, there's no problem at all.
Here's what I'm using:
3DS XL FW4.5 + Classic Emunand FW6.3
Gateway firmware version = 2.0B1.
Also, as a side note, other eshop titles work too:
* MK7 (had it before emunand) works online and can be redownloaded.
* Phoenix Wright DD in-game DLC shop works too (bought the DLC).