I was at the Mid Atlantic BBQ Association Expo this weekend and got to see these. Here are my initial thoughts:
1. I was told the cost will be approximately $180 for the Frontier model, which includes two cooking sections, the fish hanger, and everything you need for smoking or using it as a kettle. Additional cooking sections are $35.
2. The unit comes with a large water pan similar to the Brinkman pan.
3. The units are slightly smaller than the WSM in diameter.
4. The top and bottom bowls are porcelain coated. The middle sections are powder coated.
5. There are some nice, well thought out modifications to the traditional WSM design. The ability to clip and unclip sections is wonderful. I love the individual trap doors for the sections.
6. I was told by one of the gentlemen there from the UK that he has observed an approximately 10 degree temp difference between the top and bottom grates in a 4 grate setup. I forgot to ask if that was degrees F or C.
7. The BBQ Guru will probably be distributing these in the US in the next couple of months.
I really only saw two negatives -- one, I was hoping for a cooker larger in diameter than the WSM, not smaller. Second, the metal seemed to me to be of thinner gauge than the WSM metal. This observation may be incorrect so please don't quote me on it, though; I didn't get the calipers out.

But it did seem noticeably lighter. Ultimately, though, I do believe this will be a solid alternative to the WSM. Maybe not the WSM "killer" incorporating all of the mods we desire, but an option nonetheless.