Will there be a demo for MW3 and or Uncharted 3?

So yesterday I watched the trailer for MW3 and yeah it looks just like the past MW still I loved MW and find it fun I can't wait to get it and I was wondering if there will be a demo so it can ease my impatience to get it. Same for Uncharted 3 I got excited when I saw it comes out 3 days before my birthday but will there be a demo of the campaign because I know there's a multiplayer beta coming out on June. Thank you very much and let's hope this two games bring us hours and hours of fun.