There have been some delays in shipbuilding and to put in place the NSS. That one was announced before the NSS was put in place. There's the NSS and now the negotiation with the shipyard, providing the time for the shipyard to ramp up their capability. Other priority vessels were put ahead as well, too, such as the science vessel. They were built ahead of time.
On October 23rd, 2024. See this statement in context.