I had to look up whether they were releasing all at once and this is what I found:
CBT-e will enable CPA candidates to receive their scores faster and more frequently. However, there are some timeline adjustments of which boards of accountancy and CPA candidates must be aware. As you may know, currently, scores are released in two waves per scoring window. During the initial launch of CBT-e we will require a period of heightened quality control. Therefore, during the first three quarters of 2011, all candidate scores will be released following the close of the testing window.
Once this quality control cycle is complete, CPA candidates can look forward to an accelerated scoring timeline. Details will be announced on the CPA Examination website (www.aicpa.org/cpa-exam) in the Psychometrics and Scoring section.
Not sure the faster and more frequently was meant during the first 3 testing windows because of quality control measures – blah, blah, blah…..