The CPL exams have increased to 13 but the amount of material is more or less the same as it was, it is more expensive now because of the 4 extra exam fees but also helpful in that each subject now has its own exam, previously for example Perf and Planning included Performance, Mass & Balance and Flight Planning. The workload overall is still quite a lot less than the ATPL. If you want to research the content in detail go to the CAA website and look for the Theoretical Knowledge and Learning Objectives link to the old JAA website, The 2009 LOs are the basis of the new syllabus.