How are professionals who have earned RHCA, RHCDS, and RHCSS affected by these changes?
Everyone currently holding these titles is subject to the re-certification policy in place at the time they earned them. Consequently, those who have earned certification under Red Hat Enterprise Linux 4 will need to re-certify under Red Hat Enterprise Linux 6 in order to remain current. Thereafter they will remain current for three years and can extend the currency window by taking new exams or retaking ones they have previously taken, provided the exam is on a newer technology.