I passed the exam yesterday with 83%.
Well, since the test has been updated with new format (55 questions together with new services), I think whizlabs's practice tests can help to learn 50% in actual exam. New topics include API Gateway, Lambda, ENI, Enhance Network, ECS, ...
About 10 questions actually shown up in the exam, some have questions changed a bit.
It would be great if whizlabs update the quiz.
But after all, I have passed, thank you whizlabs. I may purchase practice exam for OCAJP 8 next.