Show new product attribute on the category page list.phtml in magento

Update layout xml (catalog.xml)

  

      


        YourAttributeCode

      

  


  

      


        YourAttributeCode

      

  

also you can use

YourAttributeCode
instead of
YourAttributeCode

Update template (catalog/product/list.phtml)
add the below code in list.phtml file

 $_helper->productAttribute($_product, $_product->myAttribute(), 'my_attribute');