Though there are no major changes from Payment Card Industry (PCI) Data Security Standards (DSS) 1.2.1 standard, some of the evolving requirements in the 2.0 specification will require additional action such as the inclusion of a mechanism for ranking vulnerability related risk.
The new PCI-DSS version 2.0 specifications debuted provides new clarification for how to properly secure online payment and transaction systems. The focus with the new specification is on clarity of definition for a number of key areas including virtualization and authentication.