If you have only recently joined the newsletter service for this title, you may wish to take a look at the earlier ones on PDF. Please note some information in these is out of date due to the delay in publication. Newsletter 3 was sent January 2017 to subscribers. You can see page spreads from the book here.
L'Ornitho on Stacking order David Bogie on Nearly there! Ruud van der Looij on Yes updates Timothy on Signed up gareth on Signed up