Will the Groovy language documentation be updated?

Is there an easy way to list the new features or changes between Groovy 1.0 and 1.5 and later?

I was trying to figure out what changed in Groovy since Groovy In Action 1st ed, so I was looking at these pages

http://groovy.codehaus.org/jsr/spec/

http://groovy.codehaus.org/jsr/spec/Chapter18Syntax.html

and they don't look like they have been updated for quite some time.

Is it just because the Groovy web site is not up-to-date or the documents themselves aren't?

Thanks

Fred