If you really want, you can pay  for "top-secret" lists of retired/ retiring Webkinz plush and charms.

But you don't need to pay for information which is freely available in the public domain.

 I think it's just plain wrong that those lists are for sale; nobody should pay for free information.

I am not affiliated with Ganz.

To the best of my knowledge, this information is accurate.

Here's the list:

These charms are  discontinued - even if Ganz resumes shipping charms, retailers can no longer get these charms from Ganz.

Poncho

 Golden Retriever

 Unicorn

Wacky Zingoz

White Terrier

 Pig

Pug

These full-size plush are reportedly next to retire:

Frog

 Pig

Cow

Black Bear

Monkey - allegedly both "cheeky" and "regular"

Black and White Cat

Tiger

White Poodle

Golden Retriever

Cocker Spaniel

As of 3/9/08:

These lil' kinz are now retired

Gorilla

Monkey

Panda

Unicorn

These full-size are among the retired

Basset Hound
Brown Horse
 Cheeky Cat
Cheeky Dog
Grey and White Cat 

Love Puppy
 Orange(Gold and White) Cat
Pegasus  

Unicorn

Gorilla

Raccoon

St. Bernard

Sherbet Bunny

Black Fresian

as of 6/19/08:

retired:

Yellow Lab

Samoyed

Rhino

Webkinz Whimsy Dragon rumored to be d/c - new dragons may be released

Elephant- June POM retired

It has been reported that Ganz may issue another line of charms -the current line is discontinued.

That's the extent of my "secret webkinz knowledge".

Happy Shopping!