The pattern is called My Gox, and the Ravelry database page for it is here.
I picked up two skiens of Tanis Blue Label from The Purple Purl today for this; and I have to admit, I'm actually really excited about these, despite my mounting pile of other knitting. (I even had enough reward points to get 25 dollars off, too!)
So, Tanis Blue Label in Frost:
It's a neat colourway, and I think it will really suit the pattern (not to mention, I'm loving the Tanis Blue Label for socks. It seems to work really well.)
I was hoping to only need one skein of Blue Label. I still might only need the one. But in speaking with the designer, the yardage for the pattern is just enough that I'd rather have the second skein. I'd rather have it and not need it, then need it and not have it. And, I have plans for that second skein anyway -- the leftovers from the Gox Socks will (hopefully) become the Birch Leaf Socks from "A Gathering of Lace."
Oh, and speaking of test-knits, the pattern for my previous pair of test-knit socks (I should really finish the other sock of that pair!) just went live. They're Pacific Rim socks, and the pattern is a) really fun to knit, and b) a great way to use up oddiments of sock yarns.