It is rumoured in the press (Guardian) that trident warheads to go from 180 to 260.
I don't see the benefit in doing this. One story suggests there is a US angle in terms of justifying joint development, but not sure how that really plays out. There might be a technicality in the warhead lifecycle perhaps.
But it just looks like an unnecessary provocation / escalation - which will draw criticism - but I can't see an upside in terms of posture or deterrence and it will just cost more money and could probably have been masked in any case in terms of support considerations.
What's the view? Nothing classified of course. Perhaps there will be some explanation to come.