A report released in September 2015 indicated that the first 24 ships would retain the basic design principles of the LCS program, with upgrades where needed. This group would be considered "Block 0" and also retain the "LCS" designation, for the time being. Ships 25 through 32, "Block 1" would include significant upgrades and design changes, inline with the intended capabilities of the last 20 ships of the total 52-ship procurement, these being the new "Frigate" class. The new frigates will be larger, have increased defensive and survivability capabilities and more permanent missions packages, as opposed to the original modular design.