I seriously doubt it.
On the plus side, at least they're not talking about a remake, but a sequel. The title of the script that is hunting for a studio home is Ferris Bueller 2: Another Day Off. The title alone tells me that it's probably horrible. It was written by screenwriter Rick Rapier, who doesn't even have a page up on IMDB.com.
The idea is to revisit the characters 20 years later, and we find Ferris as a Tony Robbins-type self-help guru, up to his eyeballs in his fame and fortune and wanting to take another day off.
Rapier's hope is to get the original cast back together as well as bringing back John Hughes, director of the original film.
Seeing that the guy has no track record, I highly doubt that this is going anywhere.