From what the press release said, (it's only been out 3 weeks or so) It is a ale primary fermented Belgian Pale with Brett added in the bottle. So yes, this sample might be all brett. I don't know how, well or if at all the filtering on the beer before bottling.Rayon Vert Press Release
With that said, it would be great to try some in a year, side by side with a new batch.
Anyways, I have some more pictures of the yeast slurry on my homebrew blog. The slurry is growing great from just 2 bottles of beer (12 oz) I am going to pitch some more wort on it today and try to grow some more before pitching this (if it tastes good) on my Rye Saison after primary with Belgian Style Saison Ale Yeast Blend (White Labs #WLP568) Rayon Vert Dreg's