Hy dear Bitmain and dogie,
unfortunately the "new" S4+ has no significant improvement in power to hash ratio and on my personal opinion a decrease in attraction for home miners in Middle europe, US and other countries above $0,15/kWH.
If i may post a wish for a S6 or S7, this would be 0,25W/GH and a noise level below 30db. Technically this should not be an issue for a legit company as bitmain is

Kind regards,
elrippo