Update Apr 2nd
Mangaka Zen, the author of Little Busters! Ecstacy complained that she had been preparing for the April Fool's joke of "Little Nya-sters" anime but Dengeki's premature leak spoiled her effort.
Updated on April 3rd
The President of Visual Arts announced on his twitter account that the cast of Little Busters anime hasn't been fixed yet but the anime will be aired not so far in the future. He didn't reveal the production studio but he said the producers have been under tremendous pressure since they are aware of the high expectation of the fans. He said the quality of the trailer was not high because Visual Arts themselves made the animation using image sequences sent from the production studio.
Alipio said: Oh c'mon didn't y'all see the random masked guy that popped up at the end of the trailer? Pretty April Fools-y to me. :P
Uhm yeah if you have played enough of the game you will know that is "Mask the Saito" from the game. If he is incorporated as well I am thinking more and more that this will be given the series length it deserves. I will be more upset if this is only given 13 episodes where it is clearly worth "AT LEAST" 26 + at least 13 for Refrain after that.
It seems like April Fools to me -____-
But, if not, then I think the animation studio might be either A-1 pictures or something. Cause, P.A. Works animation is a lot different than this (EX: Angel Beats). In the end I hope its not an April Fools Joke.