Actually, there are dozens of explanations. He may have come across a fault or shortcoming that required a device exchange. He may need to get in touch with either Samsung or Verizon concerning a question he had about connectivity or support. He may have had a new engangement or a prior commitment to the Mobile Nations site and has not had time to get the entire review together. He may have had a personal obligation (maybe vacation, even??) that delayed it.
I hope they do the review as well. Not just for us, but those that are interested in this device simply because it is a Samsung or whatever reason will Bing/Google this, and if there is an official review, WPC will be at the top of that search result and this device will get a fair shake from Mr. Rubino.
Let's give the man some elbow room. If he said he will do a review, I am willing to bet he will see it done.