I can say with confidence that a Metroid title is almost 100% certain for the 3DS, I would be really surprised if they didn't released one.
Castlevania, only heard rumors about it so far. But thankfully a sequel to Lords of Shadows is in the making, that's something spectacular to look forward too.
Castlevania, only heard rumors about it so far. But thankfully a sequel to Lords of Shadows is in the making, that's something spectacular to look forward too.