Guys, this is a support thread, please use one of the many other threads discussing opinions on the 360 exclusive demo.
@lingling, i'd suggest that the demo will probably appear on Xbox Live or if it's any more involved than that, instructions will most certainly be posted here on gamesas before the 25th. So have a look on XBL on the 25th and if you can't find the demo, head on back to the forums to see if there's any info
Cheers!