Skyrim - "Hearthfire" DLC Rumours

Frozen Fireball points out a rumour about Hearthfire, a possible Skyrim DLC. The first source is a trademark application (via Gaming Illustrated):

In May, Bethesda parent company ZeniMax filed a trademark for the name Hearthfire. The official documentation from the U.S. Patent and Trademark Office for Hearthfire reads: “Computer game software for use with computers and video game consoles; downloadable computer game software offered via the internet and wireless devices.” Well, that seems pretty cut and dry to me. And of course Bethesda is keeping tight-lipped dishing out the usual “we don’t comment” line.

...and then Reddit comes along with a description:

Adding more fuel to the fire are rumors from Reddit user derptemp6698 (who had previously leaked correct details to Mass Effect 3 DLC). That summary is as follows: “Hearthfire, the next official game-add on for The Elder Scrolls V: Skyrim, has arrived. For the first time in the Elder Scrolls universe, purchase land and build your own home from the ground up – from a simple one-room cottage to a sprawling compound complete with armory, alchemy laboratory, trophy room, and more! With Hearthfire, the possibilities of what you can build are endless.”