The third (and final?) DLC for Fallout 3 will be released on May 5th, and Kotaku confirms that it will "raise the level cap to 30 and remove the game's ending."
Another bit of good news for Fallout 3 players: "The new DLC will also include more weapons, enemies and perks, including one that can bring back your dog when he's killed."
I ended up not using Dogmeat after a while because the poor thing kept running at a Yao Guai and getting destroyed by that thing in a few swipes! Now, I can send my little Dogmeat at any attacker I want. Thanks, Bethesda!
To quote Kotaku one final time: "In Broken Steel the battle between the Brotherhood of Steel and the Enclave still rages and you are tasked with discovering and helping to build a Tesla Canon, a new, more powerful weapon for the Brotherhood."
I couldn't have said any of this better myself!
There is much more information in the eternal link below. No, literally, I can't even see my scroll bar when I go onto that page, so get reading already!