I can't say for sure about that, but I do know that several of the Wonder Festival exclusives have shown up for sale on the Goodsmile online store. That's not really a general release, but it might be a bit easier to buy one from there than the WF si...
Thanks! I used the cape and hat from a gashapon figure I picked up, and used a hairdryer to stretch them to fit. I couldn't find a wand, so Yuki gets a toothpick. Maybe she's big on dental hygiene.
I probably won't be able to get one, so I've made an inferior copy for myself: http://www.colony12.com/scalemodels/MagicianYuki.jpg Good enough for now, I figure.