1) Bill Dettmer has recently published a new TOC book "The Logical Thinking Process" which is a significant rewrite of his earlier book "Goldratt's Theory of Constraints" (the book where I learnt most of my TP basics). I think it is a significant improvement and an important text.
I've published the first few questions and answers of an ongoing interview with Bill to the tocthinkers.com blog
http://www.tocthinkers.com/qa_bill_dettmer/index.html
2) John Ricketts' new book about TOC in service industries will shortly be available from amazon.com. I've published a few Q&A's with John on the tocthinkers.com blog too: