This library is special, in that it's only 12 emitters, but it's quality, not quantity.
I've taken one emitter from each Pro Emitter Library and modified it to create a new emitter, and the result is the April library.
This means that if you already have the Pro Emitters, you get 12 new emitters, and if you don't have the Pro Emitters, you get to see what they're all about. (Yes, there are movies of the Pro Emitters on our site, but a movie is not the same as actually seeing the emitter running on your system.)
If you do not own any Pro Emitter libraries, I hope that these 12 emitters make you reconsider. The Pro Emitters are really pretty amazing. (Those of you who do own the Pro Emitters, please feel free to add your own comments about them here.)
Well, just realized that there's a typo in one of the emitter names. The second "made from Pro Em: Pyro 01" emitter -- the fire one, not the explosion -- should have been "made from Pro Em: Pyro 02", but I'm not going to change it.
It's not that big of a deal, but just wanted to point it out.