Atlus confirmed Shin Megami Tensei IV development yesterday with a teaser site. On the page, a couple is looking out over a ruined city covered in fog. You can see the image above and further teaser images below.
NeoGAF user SolidSnakeex made the images easier to view following the site's opening. The site also features sound effects suggesting the city been roughed up a bit. We've received no further details, but with the 3DS receiving SMT love and the Vita getting Persona 4: Golden soon, what's not to love in handheld gaming these days?