They're not gonna remake it, I don't think. They'll have a modern day Marty sending Jaden into the past to Help doc. Marty can't go, because the time machine affected his nervous system. During the coarse of the film, Jaden has to help Doc and family, but constantly struggles with taking direction from "white folks"... and being in the 1930s makes it really hard for the modern black kid to blend in with society, so... obviously, hilarity ensues...
The DeLorean was discontinued, Marty has Parkinson's disease, Biff's last big role was the gym teacher on Freaks & Geeks, and we still don't have flying cars or hoverboards. The future sucks.