MentalAlliance on 21 January 2013
I'm probably getting 5 day 1:
Fire Emblem: Awakening
Etrian Odyssey IV: Legends of the Titan
Shin Megami Tensei: Devil Summoner: Soul Hackers
Project X Zone
Pokemon X (probably)
Unless I'm forgetting some or there are more unannounced ones yet to come out in 2013 that I will want (Shin Megami Tensei IV localization and Advance Wars 5/3DS, please!), this should be the extent of my 3DS day 1 purchases.
