It seems that before the TV air you can see the TV special on nico douga (japanese) for 600yen.
It will be available between 8/19 to 8/25.
http://milky-holmes-anime.com/news/alternative_one.html
http://ch.nicovideo.jp/channel/milky-holmes_alt
While it as little to do with the anime finally on 8/8 the sixth and final episode of Milky Holmes 1.5 will be released on PSN. It sure took a while for that since if I remember correctly last episode of 1.5 was released in December.