From the AP:

The History Channel in the United States is now history.
Make that History. The cable network quietly dropped “the” and “channel” from its name recently, claiming History for itself. “Our brand is, in the media landscape, synonymous with the genre of history so I don’t think it’s presumptuous of us to call ourselves History,” said Nancy Dubuc, the network’s executive vice-president.
That’s how many viewers already refer to it, she said. “Channel” is a drag on efforts to establish the brand in other media, like on the Internet. There were no licensing issues involved in the switch, she said.
The network has even changed its “H” logo to make it look bolder, less ancient.