HTC Sensation and its 4G variant users can now access CyanogenMod 9 Nightlies as its officially arrived. A “nightly” is a bleeding edge release that is built on a daily basis, usually at night after a full day’s worth of new code has been committed.
It could oftentimes be unstable and not properly tested, lacking any changelogs, but eventually evolving into alphas, betas, release candidates, and finally stable releases.
If you’re looking to give it a go, you can head on over to the CyanogenMod download site using the link below but keep in mind, some things may be broken.