has anyone bought the new models yet? Is there a nice easy GUI interface for the simple minded? Can I attempt to over clock within the controlling software's own settings?
A) Yes, people have bought them. No, people are not yet mining on them.
B) CGMiner is pretty simple to set up, and while it does not have a GUI, it does have a HUGE amount of community support if you ever get stuck. Supposedly BFL's own EasyMiner will be mining by then, which is a GUI program. If that doesn't work, BitMinter is a GUI miner that is VERY easy to set up. All 3 are supposed to work with BFLs hardware by the time they start shipping.
C) That is still unknown, but if it is an option, it will most likely be thru BFL's own program, EasyMiner.