It was actually discussed quite a bit in this thread but for the love of cake I can't recall exactly. I'm 99% sure that it was stated EB would be making this body available for separate purchase, just wish it coincided with the release so we could have everything ready to go out of the box.
Here's one quote:
Hmm I dont know if anyone's interested but Enterbay told me today that the figure will come out in June AND the newly developed Bruce Lee Muscle Body will be put for sale separately from July.
I also thought another person also said they asked and they were were given a specific price - I think it was $50 or $60 they said.