I heard power consumption will be decreased. The original blades are 8.3 Watts per Giga Hash, so lets hope that gets cut in half.
That would put a 10GHash blade at 41 watts and a half blade at 20.5 watts. A 20watt 5ghash miner with built in controller is absolutely perfect for my purposes.
I hope the price comes down quite a lot too. But I'm not holding my breath
Power consumption is not going to drop like that. They are using the same chips and unless they can decrease the voltage to dramatically increase efficiency and then use more chips, they won't see a magical efficiency gain. They might gain a few % optimizing the power conversion.