New book on Visual Studio extensibility
As you may have noticed, there aren't many books on Visual Studio Extensibility, so any new book is great news. This is the case of a new book with the title "Professional Visual Studio Extensibility" by Keyvan Nayyeri:
http://nayyeri.net/blog/professional%2Dvisual%2Dstudio%2Dextensibility%2Dfinally%2Dreleased/
It is already available from Wiley and Wrox (where you can read the TOC, index, and first chapter) and will be available from Amazon shortly. I haven't read it yet (I am awaiting a complimentary copy in a few days or weeks) but I am excited because this book covers more than add-ins or macros, so you have chapters about VS SDK packages, DSL tools, Visual Studio Shell, extending the debugger or even MSBuild. While there is lot of information about those subjects in MSDN and blogs, I personally prefer a good book to learn new technologies.