yep. In JP version, FG Luke and FG Leia appear to help Rey defeat palpatine. Actual quote from the leak:
" Having returned to full strength, Palpatine then shoots lightning into Ben, forcing him to fall into a bottomless abyss, never to be seen again. Sideous then shoots lightning into the sky at Resistance ships. He reportedly continues to make statements about how Rey will join him. In defiance of this, Rey grabs both Anakin's and Leia's lightsabers and Palpatine turns his wrath on her. It's lightsaber vs. lightning at this point and when it seems like all hope is lost for Rey, the spectors of Luke and Leia come to her aid. They jointly work toward overpowering the Emperor, deflecting his lightning back toward himself, killing him and unleashing an explosion powerful enough to make the arena start to crumble around them. Darth Sideous, the last of the Sith Lords, is finally dead. "
However, JW says this is not how it goes anymore and that instead of helping Rey, FG only revive her after Palpatine drains the Force from the dyad (rey and kylo):
" The final confrontation of the Skywalker Saga takes place on the dead world of Exogol. Darth Sidious has thrown Ben Solo into the abyss. I have heard Ben falls into the mist, much like Han Solo's death in The Force Awakens and it visually rhymes. I believe this happens after Rey and Ben are drained by Darth Sidious. In the end, Rey weakened and seemingly alone for the final confrontation.
The rejuvenated Sith Lord, Darth Sidious, projects Sith lightning into the heavens above from his fingertips believing Rey to be incapacitated. Rey, however, is revitalized by the Jedi who lived before her for the final confrontation with Palpatine. She slowly begins to rise as Palpatine zaps the Resistance fleet with his torrent of lightning.
Darth Sidious is ready to retake his place as Galactic Emperor when Rey interrupts the Sith's victory and stands before her grandfather.
The restored Rey catches Darth Sidious' attention and he is forced to stop his stream of Sith lightning. The Resistance fleet recovers, powers back on, and the fight against Sith fleet above Exogol ensues. Rey buys the fleet just enough time for the Millennium Falcon to show up with reinforcements for the final epic space battle.
Just as Darth Sidious lowers his hands and stops attacking the fleet above. The Sith Lord looks to Rey and angrily blasts his lightning towards his granddaughter. Rey ignites Leia and Anakin Skywalker's lightsabers and deflects her grandfather's attack."
In his pods, JW is positive that FG only help revive Rey and do not engage Palaptine with her or on her behalf. So that's the change. I prefer this version because it flows with "this is your fight". FG Luke and FG Leia fighting Palpatine by her side would be a terrible fan service.