No they will not going to do prequel as they have to do more in future of spidey not of past as we have seen it in before Spiderman movie

But recently I heard that there will be a third part coming in the homecoming series to give the trilogy a final end

Yeah there is comeing some news about this that kenvin feige is producing prequel of Spiderman

They do are planning another movie but it’s not a prequel