I am using a message oriented middleware tool that internally uses Saxon 8.9 as its parser. Now we are upgrading the tool which in turn means the parser gets upgraded from 8.9 to here I would like to go through the change history of these  Saxon versions. I have searched the site Saxonica.com to get some information and I could find documents on version 8.9 but no documents were available on the minor versions of 8.9 

Can anyone guide me to get the links where the required information is available. 

Thanks in advance,