New AD Project Summer Sensational

I don't have any details yet, but Arrested Development posted an interesting tweet the other day:

Yo, We'll be releasing a special album project for Japan ONLY called, "Summer Sensational" THIS SUMMER! Japan Fans spread the word!

Well, I'm not a fan from Japan, but nonetheless I will spread the word, and hopefully we will have more details soon.  I'm not sure if this will be new material, a compilation made up of "summery" songs, or somewhere in between, and I'm not sure how this relates to the upcoming 20 Mixtape project either.  I'm sure we will know more soon, but either way my curiosity has been piqued!