From BFL_Josh's update today:

"Things are mostly stabilized at this point and with our current boards (we do not have the redesigned boards in house yet), power usage exceeds the 1w/GH, unfortunately, but it's much better than anything out by 40 - 50%, at the wall."


https://forums.butterflylabs.com/announcements/692-bfl-asic-status-3.html