Just Dance: Summer Party outed by Amazon

Amazon's posted a listing of a Just Dance expansion for Wii, subtitled Summer Party, which will be coming out next month, according to the retailer. The tracklist includes Katy Perry, Rhianna, Estelle and more. It hasn't been formally announced, but Ubisoft's since confirmed it with GameSpot. This is just a taster before the main event in October with Just Dance 3 for PS3, 360 and Wii.