I just saw this on the official Umineko TV site,
http://umineko.tv/web/main/collection/dramacd.html
and it appears a Drama CD with Higurashi/Umineko will / has been released.
you can get it here
http://www.animate-shop.jp/ws/commod...0/cmc/4106192/
I wonder if the cd is related to the new appeared Umineko no Naku Koro ni Episode X Manga
I would love it if there would be more crossover in the game and maybe a PS 2 Game with both series that's my dream