Have just got my score report for the beta exam 1Z1-805 I took in October. Although the exam was utterly exhausting - contained 120 questions and lasted for three hours - I still have managed to pass it with not a bad score.
Given the final exam parameters with its wooping 90 questions, extensive coverage of NIO, JDBC and concurrency, this new certification will be quite a challenge. My feeling is that OCAJP7 roughly corresponds to OCPJP6, though the latter deals with more topics. OCPJP7 would be somewhere in between OCPJP6/SCJP and OCMJD6/SCJD.