To be fair, retailer amiami is bundling a "new" Special Maxi-Single with this figure. The ave;new projecto website hasn't been updated in a while, so that's all we know so far. There's a slight chance this could be the standalone "Yoroken Sweets" single, but that's kind of old news by now (sample here). So, odds are we are looking at a new ave;new projecto single for Comiket 78!
Update 08/09/10: Looks like ave;new read paranda and mandichan's concerns for quality, so they decided to postpone the release for improvements!