I'm pretty sure the job offer requirement is still in effect, and will remain in effect, since the O is an employment-based visa. What made you think it had changed?

https://rjimmigrationlaw.com/resources/o-1-visa-update-new-e...

"USCIS now permits separate legal entities, such as corporations or limited liability companies (LLCs) owned by the beneficiary, to file O-1 petitions on their behalf. This change provides a significant advantage for entrepreneurs and self-employed professionals."

I am interested if it actually works in practice.