I've defined a custom list template with the following fields:
<Fields>
      <Field Type="Text" DisplayName="Sub-Title" Name="SubTitle" StaticName="SubTitle" ShowInNewForm="TRUE" 
             ShowInEditForm="TRUE" ShowInViewForms="TRUE">        
      </Field>
      <Field Type="URL" DisplayName="Header Image" Name="HeaderPicUrl" StaticName="HeaderPicUrl" ShowInNewForm="TRUE" 
             ShowInEditForm="TRUE" ShowInViewForms="TRUE">
      </Field>
      <Field Type="Note" RichText="True" RichTextMode="FullHtml" IsolateStyles="True" NumLines="5" Name="Summary" DisplayName="Summary" 
             StaticName="Summary" Sortable="False" ShowInNewForm="TRUE" ShowInEditForm="TRUE" ShowInViewForms="TRUE">
      </Field>
      <Field ID="{7662cd2c-f069-4dba-9e35-082cf976e170}" Type="Note" RichText="TRUE" RichTextMode="FullHtml" IsolateStyles="TRUE" 
             NumLines="45" Name="Body" DisplayName="$Resources:core,camlid2;" Sortable="FALSE" 
             SourceID="http://schemas.microsoft.com/sharepoint/v3" StaticName="Body">
            </Field>
      <Field ID="{6a09e75b-8d17-4698-94a8-371eda1af1ac}" Type="DateTime" Name="Expires" DisplayName="$Resources:core,camlid3;" 
             Format="DateOnly" FromBaseType="TRUE" SourceID="http://schemas.microsoft.com/sharepoint/v3" StaticName="Expires">
      </Field>
</Fields>
Note that the ShowInNewForm, ShowInEditForm, and ShowInViewForms properties are all set to TRUE.  When I create a list from the deployed template (I'm doing this from VSeWSS 1.3), the list has the correct fields, but a new item form doesn't render the custom fields at all.  Anyone know why this would be so?  Do I have to fully customize the control templates loaded by the ListFormWebPart  Doesn't that defeat the purpose of the ListFieldIterator control?
Edit:
Also, the end of the schema.xml file has this bit:
<Forms>      
    <Form Type="DisplayForm" Url="DispForm.aspx" WebPartZoneID="Main"/>
    <Form Type="EditForm" Url="EditForm.aspx" WebPartZoneID="Main"/>
    <Form Type="NewForm" Url="NewForm.aspx" WebPartZoneID="Main"/>
</Forms>