It's ARM-based, so if it isn't using one of the big kahuna emulators (the RPi3 isn't powerful enough to do VICE full-spec), it's unlikely to run even existing C64 demos.
And since there's no mention of any expanded features of the C64-ness itself, there's no draw to do any development for this device in particular.
And since there's no mention of any expanded features of the C64-ness itself, there's no draw to do any development for this device in particular.