It's no secret that Thanos will play a role in James Gunn's Guardians of the Galaxy. Marvel president Kevin Feige revealed that bit of information himself. We now have a description of a brief scene featuring the villain, and there's no doubt it will make fans happy. I have no idea where the scene plays in the movie, but it sounds like something they might put at the very end. There are SPOILERS ahead, so if you don't want to know the details, then don't read ahead.
The following information comes from Bloomberg's recent visit to Marvel Studios, and it gives us an idea of what the collaboration between Feige and Gunn is like.
Gunn freezes a frame of an imposing-looking villain any serious comic book fan would recognize instantly. He sits on a rocket-powered throne. Feige sees something on the screen that he doesn’t like. The evildoer needs to be farther away in the frame so he looks more imperious, he says.
“I don’t know,” says Gunn. “I think it’s going to look cool, man.”
“You just don’t want him to feel petty in that way,” Feige says. “I think it’s a fine line.”
“How do you think it comes off as petty here?” Gunn says.
“He’s so damn close,” Feige says.
“Yeah,” concedes Gunn. “I think I’m going to have him floating in space.”
Feige is concerned about the throne, too. He points at the base. “Those don’t need to be rockets,” he says. “Maybe gravity disks?” Feige says he’ll check back later.
In the hallway he extracts a pledge not to name the bad guy. “That could not be a bigger spoiler,” Feige says.
The report says that Guardians of the Galaxy "could potentially spin off members of the Guardians of the Galaxy, which include Star-Lord, Gamora, Drax, Groot, and Rocket Raccoon, in their own features."
I always assumed that would be the case, as that's what the studio has done with all of their other characters. When they do move forward with these standalone films, I'm sure the first one will either be a Star-Lord or Rocket Racoon/Groot adventure, which would be amazing to see.