There is a lot of speculation that the ruthless bounty hunter Boba Fett is still alive and will be a main villain once again in Star Wars The Force Awakens.
A fan managed to piece together some striking footage on Youtube which apparently shows Fett blasting his way into a building. The scene starts after 1 minute and 40 seconds into the trailer.
The reason it appears to be Fett is because the Mandalorian armor shows the same wear and tear shown in Episode 6: Return of the Jedi. The armor appears to be the same exact outfit worn by Fett.
Fett was featured in Episode 2: Attack of the clones (as a kid), Episode 5: The Empire Strikes Back and episode 6. It was assumed that Fett was killed by the sarlaac pit monster in episode 6.
If Fett is still alive he is an old man. He was likely between 18-25 years old when Luke Skywalker and Leia Organa ( Padme Skywalker’s daughter, adopted by Organa family on Alderaan) were born.