If you have been salivating at an independent client to use for Facebook messenger, your download is awaiting. It would appear that the Facebook messenger for Windows is available according to techit.co.il. It is being reported that this is a private installation file that is being sent around internally at Facebook but was shared with outsiders in celebration of the new year.
The messenger, like you would expect, operates independently of a web browser, allowing you to chat with your friends on Facebook independently of the website. The application comes with everything that you would expect and contains the classic functionality needed for conversation.
The application can be downloaded below, but beware this is not an official release from Facebook so proceed with caution.
Download: Facebook Messenger
Thanks to Ben for helping translating the source!