I think so?

Merck, J&J's duopoly competitor, has agreed to help produce the J&J to increase numbers going out. Strictly speaking, this means there will be two "strains" of the J&J vax, the original and the mimic blend, but once again, a major company sharing the exact production information with another major company (that has a financial interest in finding fault with their biggest competitor) implies things are more aboveboard than the ones only revealing what is legally required.

But I am no doctor, I'm not even a competent conspiracy theorist. I am just a quack on the internet. Assume I know nothing, and all I speak is lies, and confirm the information for yourself.