Here is a powerpoint on the main additions and deletions that have been made in the New Model Bye-laws 2013 (as compared to the 2009 version):http://tinyurl.com/Model-Byelaws-Addition-Deletn

Currently, it seems that there is little or no time-pressure on housing societies to adopt these bye-laws. So, this may be a good time to read, understand, circulate and discuss at leisure.