Well , I'd like to tag both Tsukihime and Fate/Stay Night but... I guess it can't be helped :P
Yes , Carnival Phantasm is a parody cross-over of Tsukihime , Melty Blood and Fate/Stay Night - featuring the characters
from their respective series in a humorous fashion.
For those whom are familiar with Melty Blood : ReACT may know how this Anime may end up to be like.
Well , 'nuff words and more videos I suppose , here are the two PVs for the Anime.
Release Date is specified in the PVs...
http://www.youtube.com/watch?v=KsBq3tiBeDY ( PV1 )
http://www.youtube.com/watch?v=L84Shhj32FY&feature=related ( PV2 )