Blanche was well before my time at the brewery, but my understanding is that was a Brett Trois beer - a yeast that was later found to be Sacch yeast - thus never did much in the bottle. Also, a brett saison is, IMO, a much different animal than a sour beer. I would like to continue the "Golden Girls" series as it never got off the ground. Perhaps start it over again.
We do still do Brett only beers. A new batch of Track Suit will be out soon, and is tasting great off the fermenter. Lots of pineapple like Brett esters, and a light dry hop of hops that display similar aromatics. Comb Over is another brett beer that spends time in wine barrels. That may come out again (or those barrels might become blending components).
Sours - We've done 2 in the last couple years (Outside of our berliner). Spite & Resentment (both the base beer, and the cherry/raspberry variation), and Acrimony. At least 2 more, and possibly more (if barrels play nicely) are planned for release this year. I feel like our sour program is still very much in it's infancy, but I'm excited with the direction it's headed. My approach to mixed fermentation is much different than the approach the brewers took before me. We will see if that's a good thing...
Sorry. that was long winded.