On the final trade-only day of the Frankfurt Book Fair, we bring you news about announcement and events from Thursday. Rovio announces a new book app and expects to sell millions of downloads. New Zealand editors presented their favorite books of the season at a buzz panel, and Faber’s Will Atkinson discusses the secrets behind Faber’s successful branding strategy. E-book sales are up in Italy and in Australia as print sales continue to fall. But thanks to the success of Fifty Shades of Grey, erotica has proven to be a growth area for many international publishers.