If they are indeed liquidating a farm, then they should be upfront about it. (Meaning these are all used)
We are not "liquidating a farm". I thought this was obvious we are selling brand new hardware. We took delivery of our chips literally last week. We went from 0 to 3 terrahash/sec in 48 hours:
http://eligius.st/~wizkid057/newstats/userstats.php/1NkkkghQHFNs8H1hAmKDM9fJo4mBkoHeej All the hardware is being merely stress-tested 72-96 hours in a temporary datacenter which would be a terrible place to run a farm anyway (expensive as hell

)
But...are there any plans to insert some Gen2 chips into their modded version and ship it to customers?
In theory, yes, 2nd-generation chips ("100% backward compatible" per Yifu) should be drop-in replacement, making an upgrade a breeze!