Last week, the Fifth Circuit reversed a decision from the United States District Court for the Northern District of Texas that had dismissed a class action against Six Flags Entertainment Corporation.  The complaint in Oklahoma Firefighters Pension and Retirement System v. Six Flags Entertainment Corp., et al., alleged Six Flags and its former CEO and CFO violated federal securities laws in connection with statements regarding the construction of new theme parks in China.  In overturning the lower court’s decision, the Fifth Circuit provided important guidance regarding the weight of confidential witness allegations in securities class actions, as well as evaluating legal doctrines on forward-looking statements, puffery, and scienter.