Do you mean an updated version of the RAW Image Viewer from Microsoft, or something else?

There does not appear to be a newer version of that software, but there are sure to be other apps that can read RAW images from a Canon or Nikon digital camera. There is no one standard for raw images.

P.S.: try Windows Fax and Picture Viewer, Windows Photo Gallery, or Windows Live Photo Gallery. It may be that support for those raw formats is now built in.