"This is the second time that the Second Circuit has ruled on this case.... The latest opinion is notable for its holding that contract, as well as trust, principles could inform the availability of reformation, and for its conclusion that the elements of contract reformation had been established based on generalized circumstantial evidence of a unilateral mistake by the entire plaintiff class." [Amara v. CIGNA Corp., No. 13-447-cv (L) (2d Cir. Dec. 23, 2014)]