Download BackTrack 5 R3 Blackhat Edition here. BackTrack 5 R3 preview has been given away in the BlackHat Las Vesgas event where attendees have been given a copy of BT5 R3 preview. Download the BT5 R3 Preview here.
Prior to BackTrack 5 R3 that will be realesed on August 13, 2012, attendees of the BlackHat Las Vegas event has been given a copy of BT5 R3 preview which can be found in their respective delegate bags. The DVD contains a BackTrack 5 R3 Gnome, 32-bit edition. You can grab yourself an early copy of BackTrack 5 R3 by downloading it here.