"Started working?" I was under the assumption an author usually starts his next work before the last volume even gets to print. Maybe I'm a little too idealistic there. After all, when else would you get a chance to swim in your pool of money?
Apparently all the blurb really stated was that he was collecting thoughts/ideas to ready for the novel but I'm sure despite writer's block that he's had a good idea what he planned to do since '07.
Here's the announcement for anyone interested or that can translate :P