We'll see if they show anything during Jump Festa in the next few days, if not February is when it officially starts after KH is finished. That huge spike in profits/sales for the company for the 2020 fiscal year is likely related to FFVII. We'll see this finally out by April 2020, at least the first chapter.
Edit: If it does come out by 2020 we can see it takes Square a 4-5 year production cycle to make HD FF vs. 2 years in the PS1 era.