Star Wars Legacy is a comic book series, which started a new era in expanded universe. It takes place 130 years after episode IV: A New Hope, and is totally different from any Star Wars before. The galaxy is not as it used to be. Sith are rising again. But not like it was in the movies: Darth Sidious-Darth Maul, Darth Sidious-Darth Vader, etc. The rule of two is outdated. Now it's One Sith. One Order. Which means? Shitloads of red lightsaber blades united under one Emperor.
Darth Krayt, responsible for the rebirth of Sith, usurps the throne of Galactic Empire (which emerged after the one known in movies, leaded by the military, not force-weilders) and attacks The Jedi Order. Jedi Knights, not prepared, are slaughtered, some of them flee and become hidden for a long years. One of the younglings, after witnessing the death of his father, becomes a member of the Bounty Hunters Guild, and starts his new life with the company of pirates. Who is this one? A descendant of Luke Skywalker, Cade.
That's just the beginning, but I don't want to get too far, as the plot is really good. The writers did much better work than Lucas while writing the prequels, the characters are deeper than usual in Star Wars. Finally, there is a protagonist which is not dragged by any particular side of the Force - Cade is sliding on the edge of Light and Darkness, which makes him one of the most interesting lightsaber-weilders ever. Talking about the sides, did I mention completely new order of knights, neutral in Force, the Imperial Knights? Serving Roan Fel, the real, dethroned Emperor.
Star Wars Legacy was something new. The main story of comic books has already been finished, but there's probably more to come. I hope so. It's fresh, it's intriguing and was greeted very well by fans. I really recommend it, it becomes addicting, I've spent long hours reading non-stop. It takes places after yuuzhan vong war, you don't have to read it, few articles on Wookiepedia and you can hop right into the new amazing world of Star Wars.
I would love to see a full SW movie set in these times, but to be realistic, it won't probably happen, as Lucas restricted making any new movies even after his death. The new universe has a huge potential, it would be shame to not use it more than in one comic book series. They could make a Legacy game instead of releasing those crappy Force Unleashed ones.
Start reading, and join me in waiting for more stories from the future of Star Wars.