Yes, it's true. With the third psychoustic EP a trilogy shall be sealed and an era will come to an end. It is still written in the stars whether we will ever go on a psychedelic-acoustic journey like this again. For now here's the complete trilogy at a glance:

The Psychoustic Sessions I (2012) 
The Psychoustic Sessions II (2016) 
The Psychoustic Sessions III (2019)