The exams themselves launch in the next few weeks. For details of the course content please browse to the following URLs

Instructor-Led Course 2824B, Implementing ISA Server 2004 (updated for Enterprise Edition)

E-Learning Course 2826A, Upgrading to ISA Server 2004

Exam 70-350, Implementing ISA Server 2004 Enterprise Edition credit toward MCSA: Security and MCSE: Security