Indeed you are correct. There are some technical issues with the timing between the board and the software that they are working out, apparently. I understand this will probably bring all the conspiracy theorists to the fore, so have at it. For everyone else, I'm told that they will be ready in a couple days or so for a live demo.
That's... interesting. Generally from what I've seen, unless you screw up the power and cooling FPGA-based designs either work or they don't; the communication between board and software isn't terribly complicated either. You can do it quite happily over serial and they've got a very widely-supported USB to serial chip on the board which they appear to be using as such so it's not like they even have to deal with USB.