Repat of detection code in 4.0.3a as in 2.4.2 banwave?

[lota7]

Patch 2.4.2,
"Warden was not updated. The detection method was hidden away in the 2.4.2 WoW client itself."
("http://onwarden.blogspot.com/2008/05/may-20th-ban-wave-wow-242.html")

How big of a problem is this nowadays? Is the possibility of a built in update in the patch still being looked through carefully to prevent a repeat of May 20 banwave?
I'm thinking on the 4.0.3a patch mainly.

[zaksterz]

could somebody answer this? would also really like to know it.