The AV certainly was a monumental work and over the years as the translators said it has been revisited and many errors corrected, hence later additions and new translations.
The message from the translators in the front of many editions makes interesting reading.
Here is a link to a well formated version of “From the Translators to the Reader”.
I have found that only larger Cambridge and modern aniversary reprints have it.
http://www.avbtab.org/av/avPre.htm
Here is where I get my KJV bibles,
http://www.bibles-direct.co.uk/
Their bibles are the best quality! Real English Cambridge and Oxford.
Do not order their legalistic sect song books as Allan has a long term contract to print them for a certain group.