The US Army FVL (Future Vertical Lift) program aims to introduce the next generation of helicopters to replace the utility (UH-60) and attack (AH-64) helicopters currently in use. The FLRAA (Future Long Range Air Assault) only replaces the utility helicopters. The yet to be decided FARA (Future Attack Reconnaissance Aircraft) part of the program will be for the AH-64 replacement.
None of this will prevent future operators from wanting to strap rockets and guns on utility lift aircraft to provide a limited attack capable aircraft (like the UH-1 Bushrangers). Not ideal but better than nothing.
FARA will partially replace Ah64 but only in that when the Army retired the Oh58, they were left without a scout. The Pentagon took Ah64 from National Guard units and plugged them into active duty as scouts. Basically half the fleet changed hands to gap fill. Once FARA is established those Apache go back to the NG. FARA doesn’t have the capability of the Apache in payloads and ordinance they are Light Gunships by doctrine.
A heavy Gunship version of FVL was always in the portfolio. However it’s one of the undefined ones.
Sikorsky conceptualized a full attack helicopter configuration of the Defiant X. Tandom seats nose gun and all. Sikorsky and Boeing Give us a Glimpse of Their New Attack Helicopter Concept
Bell’s ideas have varied some were centered on trying to use the same basic configuration as the V280 but modified kinda like the Battlehawk version of the Black Hawk.
Earlier version had the missiles popping out through the belly of the craft as far back as day 1 of V280.
another seemed to be a light Gunship with Stealthy features.
One variant, in Army colors, has missile racks sticking out of what was originally the passenger cabin — a conversion that units could potentially install or remove as needed in the field. The other, with Marine Corps markings, is a sleeker thoroughbred gunship with internal weapons bays...
However because it’s as yet undefined Boeing has been pushing hard to try and kitbash ideas to FVL the Apache. Boeing Is Developing A New High-Speed Apache Gunship With A Pusher Prop On Its Tail
The latest version is more conservative.
"The Apache is going to be the US Army's principal attack helicopter for the next 25 to 30 years. There's nothing right now that is on the books that's going to replace the Apache,” said Jessie Farrington, Boeing’s director of attack helicopter global sales and marketing.
They are hoping the Army will retain AH64 and CH47 well into 2060. Which isn’t impossible yet seems unlikely atleast for the US Army.