That’s two cancelled classes…. Seems they’re not sure what they want or can’t hold to a plan. Why not keep building Burke class ships and use missile systems to handle shallow water action. Or drones, possibly gunships with standoff capability.
They are building more Burkes. The Burkes are overloaded so can't add anything else to them. Before the costs exploded, the Constellation class frigates would have been half the cost of Burke. There are jobs that need a warship, like patrol off Yemen, but the LCS don't have the defenses. Also, this is not a good sign for Navy ability to build the DDG(X) which will be the successor to the Burkes.
The Constellation class won't be able to do the job of patrolling off Yemen either. Its area area defense capability is too weak. The threat level has escalated now that even terrorist groups have access to advanced drones and cruise missiles.