Planning for releasing I Love Ruby this June. It will have a new chapter dedicated to Struct and OpenStruct. Then there will be a exercise section, possibly somewhere in last where I will be giving some problems that Ruby programmers could practice. Don’t expect it to be easy.
Apart from that I will upgrade my knowledge of Meta Programming, to possibly put it in 2014 release of the book.
You can download the current book at http://is.gd/ilr2013 . Well what else, happy Rubying!