Similar guides exist for Waves 1-3, so I'm just glad to have one handy on my desktop so I can more quickly locate the ponies I'm selling. :-)
Also, I've heard that a SEPARATE set of glitter ponies is going to be seen in stores soon. It includes an EXCLUSIVE Green Glitter Colt! The packaging says it'll be in Target. See photos here: http://www.equestriadaily.com/2012/05/crystal-toys-and-translucent-brushable.html
As always I'll keep you posted on any more exciting news as I discover it! Enjoy the Ponies!