For anyone who doesn't understand german, Lexx from No Mutants Allowed points out some interesting stuff :iamgamer.de talked with Sawyer on the GamesCom. While most of the stuff in the interview is already known, there are some interesting little infoparts to get: Sawyer says, you hear in New Vegas about Redding, Gecko and Klamath. Also Crimson Caravan are named once again and the army of the master.
In a later question, Sawyer talks about how he is working for Caesar's Legion in the moment or at least the legion thinks that he is working for them. Instead, he just wants to earn reputation points with them.
Another example: He was liked by the NCR, then one of his companions asked him to cause damage to some group that is related close to the NCR. He has done it and then the NCR rangers wanted to get him down. When the NCR rangers got him, he got the choice to either "make good" again with the NCR or to get beaten up like never before.
He also said that it's hard to reach the level cap 30. Right now, he played approx 60 hours, made 30 quests and is level 23. He still has a lot quests possible to do, to level up though.
/Edit: And he talked about difficult setting in various areas. He explains, that they have areas with fixed difficult and areas, where it is a bit variable. There are areas, where you get beaten up very fast, even if you are level 20 and have good gear. As example for the difficult rate, he names the Sierra Army Depot from Fallout 2: If you go there right in the beginning of the game, you have no chance. If you level up a bit first, you will have at least a little chance and if you are level 20, you simply roll over it. Some areas in New Vegas will feel like that.