You have nothing to lose by trying it. If you don't like it, or find problems with it, you can always remove it. After all, you did say you were anticipating its release.
You might want to try to find out in advance, if there are any known conflicts (or compatibility issues) which accompany it. It might mean uninstalling a program, you wish to keep. Otherwise, I see no harm in trying it.
Just my thoughts and ¢ ¢
Well, Comcast just released Norton version 5 for it's customers. I currently use Avast, and was waiting for Norton 5 to be released for free to upgrade. Should I? Don't worry about high usage of Norton. My computer has 8GB of RAM and Windows 7. Also, Norton has been improving RAM usage since 2006.