Well, that was faster than expected. I figured the MegaTen team would wait until the ten year mark like last time but I guess this is pretty close.

Shin Megami Tensei IV confirmed by Famitsu ad - Neoseeker

The game was confirmed in a recent Famitsu issue and it looks like the team is doing what other companies (Squenix and Sega most noticeably) have been doing and decided to release a numbered sequel on a handheld. Looks like a 3DS is definetly in my future at this point. Though, I now wonder if this means Persona 5 might also make the jump from console to handheld?