A website that follows "athletics aesthetics" (and is based in Brooklyn) has tweeted out images of what it purports to be Nets gear on shelves in an unidentified retail outlet. The gear includes regular caps and snapbacks as well as t-shirts, all with variants of the Nets' leaked logo.
The Nets, which refused to comment on the leaked logo, hasn't commented on the gear yet either, but it wouldn't be surprising for manufacturers to make unauthorized versions of gear based on the logo. Adidas manufactures Nets gear as part of it contract with the NBA.
The Brooklyn Nets Logo and Apparel Has Been Unveiled, and It’s Outstanding - Tim Ryan - Big Lead Sports