Will the newly announced, 45-minute online exam for AP testing affect Purdue’s AP policy?

No. Purdue will not make any changes to its AP policy. Scores earned of a 3, 4 or 5 on the test this year will be considered the same as always. See Purdue’s complete AP policy here: https://www.admissions.purdue.edu/transfercredit/collegeboardap.php.