I found something interesting in two articles of this news on the web that could give us more of an idea of what the series is about:

http://movies.yahoo.com/news/movies.reuters.com/ridley-scotts-robin-hood-open-cannes-fest-reuters

""The 'Star Wars' universe is so dense and rich; it's crazy to think that there aren't normal, mundane everyday problems in a world so well-defined," Green said. "What do these characters do when they're not overthrowing empires?"

http://www.moviehole.net/201024321-a-star-wars-sitcom

"Creators Seth Green and Matthew Senreich want to explore the after-hours activities of characters such as Darth Vader, Bobba Fett and the pig-looking-dudes who guard Jabba's palace."

Now it makes sense to me of what the new series will focus on. Kinda sounds a little interesting.