It is the final release/gold version:
Deep troubles installing in XP SP3... Boot time increased from 15 seconds to 2 minutes, IE 8 is crashing...
Uninstall IE8, no good, IE7 crashes, memory could not be read.
Trying to install IE7 over the IE7 installation, no good.
Restoring system... no good...
Seems that IE8 messed something that I can't restore in a XP computer...
Just take care.