GLSL versions change log?

Question

Is there someplace I can read about the changes and additions made in GLSL from version 1.1 to 1.2 and from 1.2 to 1.3?
Google seem to be at a loss for this and I really don't want to start reading the complete specification.

Answer 1

Version 1.3 of the spec has differences from 1.2 marked, it also lists changes from 1.2. Version 1.2 has a list of changes from 1.1.