According to Enterbrain website, a manga based on a blog "Kuruneko Yamato" will be animated. It's about the real experience of a woman who found four stray cats and tried to find the foster owners for them. The series has been published up to volume 3 and the total number of sales has reached 350,000 copies. The author's blog was ranked first in the category of the illustration blogs. The author is a 35 years old designer, who loves sake and animals.

Updated
According to Newtype magazine July issue, Kuruneko will be aired from July.

Director: Daichi Akitaro
Animation: Oshima Rie ("Sanchome no Tama: Uchi no Tama Shirimasenka?")
Production Studio: DAX International Inc. ("Gyagu Manga Biyori" series)
Cast: actress Kobayashi Satomi plays all the six roles including cats.

Sources:
Enterbrain Kuruneko website
Kuruneko volume 2 web page
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