Eta for next gen tape-out is jan 20th
Which does not mean next gen chips will be available then, in case that's what some of you were thinking. Sample chips will arrive about 2-3 months after tape out. For example, HashFast taped-out on 2013-09-05, the first wafers were completed on 2013-11-08, and sample chips were received on 2013-12-01.
So, next gen AM chips will likely be ready in March/April.
It is not really fair to compare asicminer to hashfast. However march/april does seem like a reasonable estimate for gen3 deployment.