NZ has released a Market Research RFI for its future fleet,
@ngatimozart has posted a copy on the RNZN thread, post #8821. I suspect NZ will be showing interest in a wide variety of ship designs across a number of different types but they are a long way from settling on the capabilities required in any future Frigates. They haven't worked out yet if they want a size for size replacement for the Anzacs, a larger GP frigate in the AH140 class, a large ASW frigate in the Hunter class or a fleet of Corvettes.