64-bit OS type or 32?
Per the Specs:
Genuine Windows 7 Professional (64-bit)
I just received mine. There are a few differences with the version Woot is currently selling and the one pictured. The one I received does not have a webcam or a fingerprint reader (like the T430 in the pictures). Also, this version does not have a backlit keyboard, but it does have the Thinklight.