CyanogenMod + Sensation + Nightlys = True
It looks like CyanogenMod started to deliver nightly builds of CM9 for HTC Sensation/XE. These can be downloaded from CM Repo.
I have not had time to test these yet but I will post about my experience as soon as I get the chance (probably after the weekend). I am currently running Vorbeth ROM on my Sensation XE which is synced with Cyanogen Repo's so I already had a little taste of it and it runs really smooth.
Changelog for the nightlys should be found here but it seems to be down at the moment.
CyanogenMod (pronounced sigh-AN-oh-jen-mod), is a customized, aftermarket firmware distribution for several Android devices. Based on the Android Open Source Project, CyanogenMod is designed to increase performance and reliability over Android-based ROMs released by vendors and carriers such as Google, T-Mobile, HTC, etc. CyanogenMod also offers a variety of features & enhancements that are not currently found in these versions of Android.