Nomura in an interview said : 

“Right, so, looking at the comments, I’m seeing people ask every so often about the third entry in the [Final Fantasy VII] Remake series,” Nomura said. “Apparently, [co-director Motomu] Toriyama mentioned in an interview that something might be released around the second anniversary [of Final Fantasy VII: Ever Crisis]. So that’s probably where those expectations are coming from. Right, so things are progressing really smoothly. I can’t really say more—if I suddenly went, ‘Well, actually…,’ everyone would be really surprised! (Laughs.)"

“So yeah, things are moving along really smoothly, and the release timing has already been decided. We’re moving forward according to that schedule right now, so please rest assured and be patient.
And this has also come up in the comments here and there, but Kingdom Hearts IV is likewise steadily moving forward according to schedule, so please look forward to it.”

The platforms and release dates of the games have yet to be decided. However, we can expect an Xbox release, as Square Enix has changed its plans and started releasing some of its games on Xbox Series as well.