This is a moderately modified version of the stock HTC Aria AT&T Android 2.2.2 ROM. It has root, busybox, ro.secure=0 and some nice root utils (Superuser, etc.) and the stupid AT&T bloat has been removed. It also features a kernel that supports overclocking and has a few other tweaks to make it more efficient. This is a great rooted replacement for the stock ROM if you like HTC Sense, otherwise, Cyanogen has a very good CM7 version for the aria. You might like that better.
At this point in time, it is unlikely that HTC will offer any official updates for Aria. I consider Aria orphaned by HTC and this is probably going to be my last "Liberated" update for the Aria unless some bugs are found in this release.
[update] 11-Jan-2012: No CIQ in this ROM.
Copy this to your SDCard and install via recovery. All caveats apply: backup with nandroid and titanium first. Delete cache and dalvik. Should install fine over existing data partitions, but it never hurts to have a titanium backup of your market apps to be sure.
Some users are having issues with installing this over an existing FR008 or R012. I have tried it several ways and it has worked for me, but if you get a boot loop, then you will probably have to do a data wipe to get this to work. If you must wipe data, you can use Market apps like MyBackup, Titanium Backup or Astro to backup all your apps to minimize the fallout from a data wipe.