The second edition of Carson’s commentary on Matthew just became available this week:
It’s bound with the commentary on Mark by Walter W. Wessel and Mark L. Strauss (pp. 671–989).
It’s not drastically different from the first edition (1984), but the entire commentary is updated to some degree in both content and wording. It’s about fifty pages longer than the first edition because it adds new discussions that interact with secondary literature over the past quarter-century.