People are talking about Gen 4 remakes as if it's an expected thing this generation even before SwSh are out but how can you be so sure?

For example, there was plenty of foreshadowing that ORAS were going to be released in Gen 6, starting from the relatively huge number of Megas Gen 3 got compared to the others (except Gen 1, because Kanto pandering is the standard).

As far as I know there are no such clues so far that DP remakes are going to happen, unless I'm missing something here.