The Shin Megami Tensei IV FINAL stream was originally broadcast on February 9th, 2016 and features high level gameplay footage.
The presentation can be viewed in this first video, but consists of over 2 hours of Japanese speech. They show off some SMT IV FINAL merch, and show gameplay footage of a party around level 20. At certain random points, cosplayers dressed as some of the demons show up on the stream.
English fans of the series might be more interested in the gameplay footage Atlus also posted. It was also broadcasted during the same event and features gameplay footage of a party around level 80.
That video is below.
Shin Megami Tensei IV FINAL was released in Japan for the Nintendo 3DS on February 10th, 2016. No announcements have been made about western localizations, but Atlus has been very good to us for a long time now, so we’d expect one eventually.