ASICMINER are expecting their 4th gen 28nm samples back around the 16th December.
Update
Some details of BE300:
Process: tsmc 28nm hpc
Package: fclga (5mm x 5mm)
Normal Mode:
0.7v vdd
6gh/s per chip
8gh/s-12gh/s per chip for mass production
0.343w/g on chip
~0.3w/g on chip for mass production
Low Power Mode:
0.55v vdd
4.5gh/s per chip
6gh/s-9gh/s per chip for mass production
0.225w/g on chip
~0.2w/g on chip for mass production
The schedule of BE300 producing: First batch production will be done next Feb.
Spondoolies have also said that their 3rd gen 28nm ASIC should be available late Q1 2015 and should have be around 0.2 J/Gh. BitFury have also said their next gen ASIC will also be around 0.2 J/Gh but I haven't heard any time frame for them. KNC's claims seem like fantasy to me as well.
The ASIC manufacturers will all be providing cloud mining services next year as well, with both ASICMiner, Bitmain and KNC already doing so, and Spondoolies saying they'll likely do so too.