It's been more than three months since Xbox One players got the ability to load and play most player-created Fallout 4 mods, a rarity in the console world. PlayStation 4 owners, however, are still waiting for the same feature, seemingly owing d to continuing technical problems and issues with Sony.
PS4 modding for Fallout 4 was initially promised for some time in June, after the late May release of Xbox One mod support. By mid-June, however, Bethesda admitted problems with memory and performance issues on the console, struggles with the PS4's proprietary sound file format, and a Sony-imposed mod storage limit of 900 MB (compared to a full 2GB on the Xbox One). Despite all that, a closed beta for PS4 modding was reportedly "close to ready" at the time.
It wasn't until the end of June that Bethesda officially delayed that beta indefinitely. By early August, Bethesda could only say that "we’re working with Sony on Fallout 4 Mod support for PS4" and that "the process [for adding PS4 mods] is still under evaluation."