This is exactly what we wanted to happen: first the HTC Endeavor is leaked (see news of it on the podcast) and then the RUU (ROM Upgrade Utility) gets leaked with the Android 4.0 and Sense UI ROM included inside for the upcoming Endeavor. All of this means that we get to see what Sense UI looks like on Android 4.0 without having to wait as long. And dare I say, it looks impressive with the subtle changes it has gone through. There have not been many tweaks to make note of so far, but mostly the aesthetic has been slightly polished and reorganized, with new lockscreen options to boot. Check out the source link for the full analysis of the software build.