UPDATE: from the FW site's new pre-order section for IA 10
"A new campaign siege special mission for use with the Badab War campaign rules found in Imperial Armour Volume 9, three new Apocalypse formations, ten new special characters for the Space Marine Chapters featured in this book, new ships and fleet lists for Battlefleet Gothic and a phenomenal range of colour profiles and pictures. "
New ships? Betting SM ships at that.