In terms of US availability, ZTE didn't mention any operator commitments at this time, but we can expect to at least be able to purchase one through an online retailer.
In terms of build quality ZTE didn't disappoint, either (at least the casing is certainly a big step up from the Skate), and their 4.3-inch qHD LCDs looked good as well.
And due to the current state of the silicon (even though vendors like ZTE are already sampling it), we weren't allowed to run any benchmark tests on the Snapdragon 800 development devices on display just yet, though we've been told to stay tuned in June.
It doesn't mean we're going to come away from the show empty-handed: ZTE has confirmed that it will be announcing a 5-inch FHD (1080p) device called the Grand S on January 8th, and it's quite possible that a few other previously unseen products will show up at its booth.