The precision-guided munitions capability has really added a new dimension to the gunship's capabilities, giving it more stand-off reach and the ability to engage targets in multiple distinct areas simultaneously, something you can read about in more detail here.
The addition of new weapons in the future, including the GBU-53/B Stormbreaker, previously known as the Small Diameter Bomb II, and the GBU-69/B Small Glide Munition, both of which have multi-mode guidance systems, will only increase the AC-130J's flexibility. With its 30mm and 105mm weapons, the Ghostriders can also still provide the same kind of extremely precise direct fire support as their predecessors.
The AC-130Js are also packed with a variety of updated sensors, data links, communications systems, and more, and the Air Force is already in the process of further updating those systems. The latest Block 30 Ghostriders, which the 4th Special Operations Squadron began receiving in March, feature a number of improvements over the Block 20 aircraft that the 73rd Special Operations Squadron is flying in Afghanistan now. This includes upgraded sensor turrets with higher fidelity electro-optical and infrared full-motion video cameras and a new, large broadband satellite communications "hump" on top of the forward fuselage.
Members of the 4th Special Operations Squadron offer a tour of the unit's first Block 30 AC-130J.
The Air Force is looking to improve the survivability of all of its remaining gunships against newly emerging threats, such as GPS jamming, too. In 2018, U.S. Army General Raymond Thomas, then head of U.S. Special Operations Command, said that unspecified opponents – most likely Russian or Russian-backed forces – were using electronic warfare attacks against gunships operating over Syria.
Entirely new capabilities might find their way onto the Ghostriders as time goes on, too. AFSOC is planning to demonstrate a high-energy laser weapon on one of its AC-130Js in 2022.
But with no more AC-130U deployments on the schedule and AC-130Js now flying combat missions, the Air Force has already entered a new era of gunship operations.