Star Wars Action News has the scoop.

"With the ad for a new book, entitled Millennium Falcon appearing at the end of the newest Legacy of the Force book Invincible (on store shelves tomorrow) it was widely suspected that this meant Del Rey's contract with Lucasfilm for more Star Wars books was extended.

We contacted our sources at Del Rey and we can now confirm this to be the case!

Per our contact from Del Rey, Del Rey has received an extended contract for more Star Wars novels. "There are sure there will be more books into 2009" he said, but he could not be more specific about the details of the contract, how many years it covered, or how many books we may see. He did confirm there would be new adult fiction as well as companion books, like the Star Wars Encyclopedia being released this fall

So that means more great Star Wars fiction to come from Del Rey. We expect an official announcement from Lucasfilm's Sue Rostoni to be forthcoming."