the book is out, and Jell-O/Popsicle (who was making them under license from Jell-O) seems to have given up on our favorite frosty treat.
The term "Pudding Pop" is a generic though, not a trademark. A Minnesota dairy we love, Kemps, is making them but they are only sold in certain areas.
But you can also make your own!
Check out this totally cool tutorial for rainbow Pudding Pops!
And I also love these more traditional ones from Chow.