I just passed SPD 4.0 and am going to transition to 5.0
Without saying anything specific, I will say that the actual test vignette was much harder than most of the practice vignettes I did. Also, be warned - the vignette I did for the test had requirements that could not all be satisfied simultaneously in one solution. I had to prioritize which criteria I would and would not meet in my solution. I left the test convinced I had failed because I could not 100% meet every requirement. Much to my relief, my priorities were apparently good enough and I passed.
Good luck to all, ARE Coach has been an excellent resource for me on 4.0. Thanks Coach!