This is what I dug up - looks like since it is a class action anyone will be able to get in on the settlement, not just the original 7000 that filed:

In other words, the legal rights of most corn farmers who did not plant Viptera would be automatically adjudicated in the producer class action. If the class were to settle its claims with Syngenta, “absent class members” (those not named in the suit but meeting the definition of members) would share in the proceeds. The proceeds would be distributed first to the attorneys, with the remainder divided amongst class members according to a formula determined by the parties and the court. Absent class members are generally not allowed to participate in pretrial discovery. In successful actions, absent class members are generally entitled to share in damage awards after proving their qualifications. Individual damage awards in class actions, however, are generally very small, even when the judgments against the defendants are very large.

https://www.calt.iastate.edu/article/pending-syngenta-lawsuits-raise-numerous-questions