I'm sure there's gonna be a lot of news about this, but I think it's exciting to have this powertoy released (since I'm an aspiring photographer).

The Microsoft RAW Image Thumbnailer and Viewer will give the ability to view raw files without having to launch photoshop or the bundled software.

Download link:
http://www.microsoft.com/downloads/details.aspx?FamilyID=d48e808e-b10d-4ce4-a141-5866fd4a3286&displaylang=en