The ten episode second season of Fate/kaleid liner Prisma Illya 2wei! ended today and they did exactly what they did before and provide news that a new series will be coming next year. The new series will be called Fate/kaleid liner Prisma Illya 2wei! Herz! when it lands in 2015, presumably in the same summer schedule as this season.
This will mark the third season of the property that deals with the alternate world setting from the Fate/stay night universe as written and illustrated by Hiroshi Hiroyama. The series began in 2007 and has run several short run series with each working its own progression and theme while tied to the larger work.
Sentai Filmworks has licensed and released the first series on DVD and Blu-ray in bilingual form.