Hi @MortenComadan ; you don't mention what your project is based on for code; Arduino/ESP-IDF/MicroPython/UFlow2 etc..
For the tools where Expressif have got involved the support should be there already. The C6 co-processor gets a standard firmware (that talks via QSPI to the P4) and the P4 IDF libraries know how to use this.
What I'm unsure about is exactly which features are actually implemented in the ESP IDF; I want to use bluetooth audio sink features.. eventually.If (like me) you are into MicroPython then good news. V1.27.0 was released a couple of days ago and has official P4 support: https://github.com/micropython/micropython/releases/tag/v1.27.0
UFlow2 is based on an older micropython version; I'm not sure how much of the P4 stuff they may have backported.
I only got my Tab5 today, I'm going to be installing micropython 1.27 asap.