The next version referred to would most likely be SharePoint's including FBA profile information in this page.
In the meantime, you can override the default control template used to create the user info form. If you look in the userdisp.aspx file you see the following control -
<
SharePoint:FormComponent id="UserListForm" TemplateName="UserListForm" ControlMode="Display" runat="server"/>
The template mentioned for the control is UserListForm and is found in the file C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\TEMPLATE\CONTROLTEMPLATES\DefaultTemplates.ascx.
The file C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\TEMPLATE\LAYOUTS\SPSolutions\Delegation\MangProfilePage.aspx uses the same FormComponent control to display the profile info using the template defined in the file ..\12\TEMPLATE\CONTROLTEMPLATES\DelegationProfilePropertiesControl.ascx.
Using the layouts in both of these files you can override the form using the following MSDN article as a reference. You will need to add code in a <script runat="server"></script> block to populate the controls from the layout in DelegationProfilePropertiesControl.ascx.
http://msdn.microsoft.com/en-us/library/aa544582.aspx