The tablet-optimized operating system really has no business being on a phone with a 4.3-inch WSVGA screen, but a fellow by the name of AndroidBall plans to take on the task of getting the cell radio, WiFi, hardware acceleration, and maybe the camera working on this "novelty" test build anyway. He's been chatting with deeper-blue, the dev who got Honeycomb up and running on the Barnes & Noble Nook Color, to see what they can get worked out together before the source code is released.
AndroidBall has made the current build available for download (link below) for those who want to flash it on their EVO. Those who don't want/need to sample Honeycomb in person can just watch the 5-minute video below.
[T3hH4xx0r via Phandroid]