Google will launch its e-book retail business, now being called Google Editions, before the end of the year. A Google spokesman gave no reason for the delay and declined to give other details. Wall Street Journal reported today that the venture had cleared some technical and legal hurdles. Independent booksellers would be benefit the most from Google’s concept, the WSJ report says. Google already offers a service called Google Book Search, which allows users to search and preview millions of books from libraries and publishers.”]