No it does not imply that, you just assume that. It says
available on.
You don't have to purchase separately, you can unlock them with trophies, and get it free with a pre-order at just about every major video game retailer.
I don't get why this is such a big deal, free if you pre-order. It cost you nothing.
If this was so important to you, you would just pre-order.
Just being argumentative now people.