our ComDev Dan Amrich announced the following good news:
"Sony is reporting to us that the permissions for the DLC added April 1 and April 8 should now be fixed. If you were disappointed that these PS3 purchases were not downloading for free on PS4, please try downloading them on PS4 now and report back on what you experience."
Please, if you come across a permission that does not work, head over to the Ubi forums and let Dan (and us) know. Thanks!