The next HMS Renown is more likely to be a Type 83 destroyer

What kind of warship could become the next HMS Renown?

Probably a Type 83 destroyer rather than the next ballistic-missile or attack-submarine class.

The name Renown has already passed from capital ships to a Resolution-class ballistic-missile submarine. The panel does not expect it in the next British deterrent class and anticipates that a later attack-submarine sequence will begin with B-names after the Astute class. That leaves the future Type 83 air-defence destroyer as the likelier near-term home for the name. The answer is a naming forecast rather than confirmation of an announced ship.