From the same website that brought them up:
Hardly surprised personally but there it is.
Konami Claims Recent Silent Hill Rumors are False - Rely on Horror
Trusted sources of ours provided similar details regarding a Silent Hill reboot and the continuation of Silent Hills. We asked Konami for some answers.
www.relyonhorror.com
According to a North American PR representative for Konami, recent Silent Hill rumors "are not true."
"We're aware of all the rumors and reports but can confirm that they are not true. I know it's not the answer your fans may want to hear," said the Konami US PR rep.
In the Konami rep's original email, he also said: "It's not to say we are completely closing the door on the franchise, just not in the way it is being reported." So, while Konami US is denying that the rumors are true, they're once again acknowledging that the series is still alive in some way.
Hardly surprised personally but there it is.