For those of you who eagerly awaiting the release of this skin, I'm sad to say we still don't have a release date for it. The last thing we heard was..
Waiting is always the hardest part. We're still at work with the skin. As we mentioned it will be Legendary, this means new sounds and new particle effects. It will also be legendary pricing.
In terms of arrival... we're juggling a few really awesome skins right now. Pulsefire Ezreal is one of them, but it won't be out in the next patch for sure.
PLEASE REMEMBER: This stuff pulled out of the game files and shouldn't be judged as a finished / complete project. Most videos floating around just uses swappers to skin over existing models which typically result in the clunky and unfluid animations.