The Google-Edition HTC One started shipping out to folks over the last few weeks, and the good fairies at XDA Forums have been working to get a copy of the ROM so that ordinary One owners can get the pure Google experience on their devices. Here's how to do it.
These tips come from here, and you need to be forewarned that rooting and replacing software on your device can be a risky process if you don't know what you're doing. You were warned.
Then just follow the handy instructions contained in this post and you'll be away!
Keep in mind that flashing a stock ROM onto your HTC One will wipe whatever's already on it, so be sure you've backed up and have followed the instructions carefully! [XDA]