Unfortunately, changelog is not available as it was just announced.
File Size225 MB (235.583.248 bytes)
If you are reading this post, you might be interested in the following thread:
Frys has renewed their offer for Nero 9 (Free After Rebate) when purchased between 12/17/2008 and 12/18/2008
Again, there are two rebates so check the dates and requirements.