NetBSD 6.0 release candidate 1 (RC1) was released on 31, August. You can download it from here: ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-6.0_RC1/ or other mirrors. I missed official release because announcement is not visible on NetBSD front page. Of course, I saw RC1 folder earlier but I held my post until official release. You can read it here. So download it, enjoy it and submit bugs :).