I wonder if it's a deal of someone making the site live early & they aren't ready or something? I see there's no mention of anything in the news on the official publisher site
http://www.tor-forge.com
Of course Macmillan (formerly Holtzbrinck) does little right when it comes to ebooks so who knows, we may not hear anything for weeks or it could be tomorrow or they could cancel things before they get started.