Since we are talking about 360 new revision. It is also good to consider what other thing that might be better in the new revision. For instance HDMI port!

Visit the following Xbox Scene link.

That is a possibility due to 65nm process and 360 motherboard revision.

perhaps larger hard disk? Maybe internal HD-DVD drive? This is all not confirmed by Microsoft.

For me the 65 nm process is good enough reason to wait.

Cheers!!!