According to the official website, the second season of TV Anime Fate/kaleid liner Prisma Illya will be aired in July 2014. The first season of the TV Anime ended in September last year, with an instant announcement of a second season of the series.
As mentioned before, the second season has a subtitle of 2wei! (Zwei!), the original Manga covered twice the amount of volume of the first Manga, i.e. the first season of the TV Anime aired last July. Thus we are more or less expecting a two-cour TV Anime this time. We are going to have the second season of Date a Live next month, with a total episode of 10 though, and what’s waiting next is the second season of Sword Art Online in July. Like it or dislike it, there will be a lot of fun.
The official website also posted the 21-second PV and you can check it out below.
Source: Official Website