Some time ago a trailer for Shin Megami Tensei IV surfaced. It didn’t show much in the way of gameplay and story, but it did show some scenes that looked to take place in multiple eras. But now a New trailer has surfaced, this time from Atlus themselves. We can see more actions being performed with the armbrace that was shown briefly in the previous trailer. From the looks of it, it looks like a augmented reality device the main character wears to get info on his surroundings.
On the action side of things, the dungeons are your usual MegaTen demonic fare, with battles reverting back to the old-school first person view (instead of all characters being visible like in Nocturne, the 3rd mainline SMT game). Very briefly (around the 1:35 mark), we can see that battles are not random and are initiated by pixel-men. The enemies themselves are sprite based. A little bit after that, we can see what looks to be a fusion taking place, a series staple. The music from the website can also be heard.
More info on Shin Megami Tensei IV will be divulged this Saturday during the Tokyo Game Show.