It looks like the trend of original fiction in Star Wars Insider will continue with a story about Darth Vader. Here's a tweet from an editor at Del Rey:
"Just turned in the latest Star Wars Insider story: "Vader Adrift," by Ryder Windham (who's the co-author of THE COMPLETE VADER). This story will appear in the November 15th edition of Insider, so make sure to check it out!"