Here's a screen-shot of the "out-of-stock" notice at the SageTV Store:

The good news is that SageTV is projecting to have more in stock by 12/15 and will be taking preorders beginning 12/12. So if you want one before Christmas you better plan to stop by the SageTV store on December 12th - the HD100s and now HD200s seem to sell like hotcakes and its obvious SageTV orders in relatively small batches so you've been warned.
SageTV Store HD200 Theater Sold Out Announcement