Will callsign need to change when 1B is deployed ?

[fraab]

Currently the callsign in all programs is set to FOSSASAT-1. Will it change to FOSSASAT-1B when the new satellite is deployed?

[Gipsonek]

That's correct, packets sent to/from any given satellite will always have the correct callsign - "FOSSASAT-1B" for FOSSASAT-1B, "FOSSASAT-2" for FOSSASAT-2 etc.

The examples here only show the basic usage - IMO it doesn't make much sense to have separate examples for all the satellites.