Saw this on amazon.com and thought I'd share!
<span class="qpHeadline">Pre-order "Retribution" for Demo Access>
Pre-order "Resistance Retribution" for PSP now through Jan. 12, 2008
and get a unique code to download and play the early access demo. Codes
to access the demo will be sent before the early access period begins.
Offer good while supplies last. Must be sold and shipped by Amazon.com
to be eligible.