A couple of notes before you install pre-release #3. If you have Smoke pre-release 2 projects you are still working on, you'll need to convert for use in pre-release 3. See details are on the Smoke 2013 AREA forum. It's also probably a good idea to uninstall Smoke pre-release trial 2 before you install Smoke pre-release trial 3.
You should also check out the Smoke Learning Channel for brand new tutorials on the additions to pre-release 3:
• New conform workflow