My pet theory is that OpenAI releases are on hiatus pending the US elections. It would be a huge disaster to release SORA in the next few months and have it some way sway voting. What do you think?
I don't know of any official source. But reading between the lines:
Murati also told the Journal that Sora is “much more expensive”.
And just how few sample videos they have output. The point of AI generated content is you _never_ need to reuse it, you can just generate more.