Regarding those rumours, Konami wouldn't discuss the Silent Hills project specifically, but said: "We will continue to develop the Silent Hill series."
http://www.gamespot.com/articles/konami ... 0-6426908/
http://kotaku.com/its-official-silent-h ... 1700379816
Q&A from Konami
Why has the image of Norman Reedus disappeared from the official website?
This is because our contract period with him has expired.
Why is “P.T.” no longer available on Playstation Network?
Because the distribution period has expired.
What will happen with regard to “SILENT HILL”?
Konami Digital Entertainment Co., Ltd. will continue to develop the “SILENT HILL” series.
What will happen with regard to “P.T.”?
P.T. was purely created to be a playable teaser for “SILENT HILL.”
What do you mean by “playable teaser”?
The playable teaser was a trial edition of “SILENT HILLS” intended to give players an idea of the game concept.