No update, but this from Sportsline, (page 2 linked), who list him as the #5 PG:
5. Jarrett Jack, 6-3, 202, Georgia Tech: Jack is still on the fence about his entry, which may have a lot to do with the presence of Nos. 1 and 3 on this list. With those two gone, he could dominate the ACC and elevate his draft position, particularly if he leads the Yellow Jackets to a successful season. With five seniors gone, he'll be counted on to lead should he return, a role it won't be easy to shy away from.