Page 6 of the April 2016 catalogue.
The Towers of Illica is listed on page 6-7 of Scholastic's new cataogue for books coming out in April 2016. Some new info is available. The book's ISBN/APN is 9781742990644. It is 176 pages long. The size of the book, like the previous installments in the series, re 198 x 128 mm. And it is going to cost 15.99 AUD. The background image used on page 6 is a painting of a cliff next to the sea, with a lighthouse and seabirds circing above, and it is likely that this is supposed to be the island of Illica.
Page 7 of the April 2016 catalogue.
Furthermore, there is a golden-coloured graphic of Australia for some reason, which appears several times in the text. At first I thought it was a new islan. Illica? The Isle of Tier maybe? Who knows? When I extracted the vector graphic as an image, I saw it was Australia, but it did make me think, like I've done many times before, that it would amazing to have maps of more of the different islands some day, even of the Shadowlands. Detailed maps of Dorne, Illica, Maris, the Isle of Tier and so on would be amazing. Anyway, I've gotten way sidetracked. I'd like to say that this catalogue were discovered by the DQ Wiki admin Belt of Deltora, and it's him you should be thanking. Now, I can't wait till April 1st.
The map graphic in the catalogue.
Source: http://www.scholastic.com.au/retail/boksellers/assets/pdf/April_2016.pdf