Not quite hot as they were released earlier this year, but these two interesting books are on the top of my 'to read' pile. I haven't made enough headway into either to give a considered opinion, but I have another of Sandy Black's books Knitwear in Fashion and it's a great read. Eco-chic published here and available locally.
Designing a Knitwear Collection covers everything I studied in one of my design subjects and looks like it will be a great reference book. It is a bit of an investment though as last time I checked it was $160 in a Melbourne bookshop.