2 different accessory packs have been discovered for the new LEGO City Arctic subtheme. The first pack is the Polar Accessory Set (850932). It can be found in retail LEGO Stores for $15 and comes with a fabric tent and male & female minifigures. This tent is similar to the one found in LEGO Friends Jungle Accessory Pack (850967).
The second pack was discovered in Japan and contains a communication station with a sticker sheet. Not much is known about this one but it’s purely a promotional set so we’ll have to wait until a retailer announces it as a giveaway.