It should come as no surprise to people who have followed the lengthy developed of Alan Wake that Remedy are concentrating on getting the Xbox 360 version out first, but lately it has been very quiet with regards to the PC version. Remedy made the following statement on their forums regarding the status of the PC version:
"Unfortunately all I can say at this point is that we're focusing all our efforts on the 360 version and will be making comments in regards to the PC at a later in time."
Hopefully we will see a PC version of Alan Wake at some point.