Allegorithmic have posted a video to overview the user interface of Substance Painter.
Substance Painter - Real-time Creativity
This video shows some real-time features that can be applied with Substance Painter using Substance Effects and Particle Brushes.
Check out the preview videos of Allegorithmic's brilliant real-time 3D painting application Substance Painter.
Allegorithmic have released Bitmap2Material 3, their map generator software with phyicially-based rendering support.