US Navy plans to buy two destroyers annually while developing DDG(X).

According to a tweet published by GDBIW on February 4, 2022, the U.S. Navy stated it's committed to buying two Flight III Arleigh Burke-class destroyers per year as it transitions to DDG(X).
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Artist rendering of the DDG(X) (Picture source: U.S. Navy)

The Arleigh Burke-class destroyer is a multi-mission combatant that offers defense against a wide range of threats, including ballistic missiles. It operates in support of carrier battle groups, surface action groups, amphibious groups and replenishment groups, providing a complete array of anti-submarine, anti-air and anti-surface capabilities.

Arleigh Burke-class destroyers combine the AEGIS combat system, the Vertical Launching System, an advanced ASW system, two embarked SH-60 helicopters, advanced anti-aircraft missiles and Tomahawk anti-ship and land-attack missiles. Designed for survivability, the ships incorporate all-steel construction and gas turbine propulsion.

The Flight III upgrades include a more powerful missile defense radar, increased shipboard power production and hull enhancements.

The DDG(X) program, also known as the Next-Generation Guided-Missile Destroyer program, is a United States Navy program to develop a class of surface combatant vessels.