I'm ready to test the new edition, but can't find any players.

I live in a populous area (Denver) with Organized Play available, however I cannot find a group to playtest with. Is there some function on the internet that I am not clued into that helps with meeting irl to play the new edition?

There is a Facebook group dedicated to the playtest. Maybe check there?

FB link https://www.facebook.com/groups/2ndEdPFPlaytest/about/

You can also try the Gamer Connection sub-forum. Not sure how many folks use it, but it is designed for getting people together to play.

List your game on Warhorn? They've got a playtest tag which gets you listings for games all over the place.