User's Guides beyond 0.8.19

The ETHEREAL USER'S GUIDE at "http://www.ethereal.com/docs/user-guide/" says 
that it is for ETHEREAL version 0.8.19.  I have seen various references to 
updated versions of the GUIDE for newer versions of ETHEREAL.  Why do there seem 
to be newer versions of the GUIDE floating around, but the "official" guide 
remains stuck at ETHEREAL version 0.8.19?

References to newer versions:

http://www.ethereal.com/docs/syngress-book/284_EPS_02.pdf:
"Another great source of information is the Ethereal User s Guide, by Richard 
Sharpe, located at www.ethereal.com/docs/user-guide. It is a bit outdated, based 
on version 0.9.7, but it still contains some great information."

http://www.ethereal.com/lists/ethereal-users/200211/msg00223.html:
"See Ethereal User's Guide: V1.1 for ethereal 0.9.7..."

http://kiz.uni-ulm.de/staff/software/doku/free_unix/ethereal/user-guide/:
"Ethereal User's Guide
V1.1 for Ethereal 0.9.7
Richard Sharpe

Ed Warnicke

Copyright © 2001, 2002 by Richard Sharpe, Ed Warnicke"