Somebody posted on this topic a while back, but I can't find it now.
So my apologies for repeating it:

For how long is the PW-5 the official glider of the World Class? Are
there any provisions in the FAI or IGC rules for the eventual
retirement of the design and a switch to a second-generation WC
glider?

Just wondering...

Thanks, and best regards to all

Bob K.
http://www.hpaircraft.com